1, natural plants will absorb trace elements from the soil during their growth, and various vegetables that people eat daily will also contain trace elements. Therefore, they can make up for the deficiency of trace elements by eating vegetables or plants. If they can't eat, they can also be used as medicine. After boiling and soaking, useful components will be extracted, which will contain a lot of trace elements. The contents of 58 trace elements in 5 kinds of duckweed were determined by inductively coupled plasma emission spectrometry. The results show that duckweed contains five essential trace elements of copper, zinc, iron, manganese and molybdenum, and the content is high. The element with the highest content is potassium, which is consistent with the diuretic effect of duckweed. Juglans regia (Juglans regia) in Ma Xin, whose fruit is autumn walnut, is the seed of autumn walnut. Its nuts are tonic drugs, which have the function of relieving cough and moistening intestines. According to literature, soaking in wine is used to treat gastropathy and abdominal pain (spasmodic abdominal pain such as gastritis and duodenal ulcer). Pu Kuishan et al. determined 1 1 trace elements in walnut autumn fruit by flame atomic absorption spectrophotometry. Results Gd and Co elements were not detected, but they were rich in essential elements such as Zn, Cu, Mn and Se. The dissolution rate of zinc, copper, iron, manganese and selenium in wine extract is between 4% and 24%. In the treatment, the highest dissolution rate of wine extract is Se. Selenium has anti-inflammatory, anticancer, anti-aging, cardiovascular diseases, cataracts and other diseases. The lysate also contains zinc, copper, manganese and so on. Copper-zinc superoxide dismutase and manganese superoxide dismutase are the main superoxide dismutase that can scavenge active oxygen free radicals that cause aging. Zinc, copper and manganese are of great significance to SOD activity and stability. Coleus forskohlii of Labiatae. COLEOPTERA belongs to COLEOPTERA, which is found in the northeast of Yunnan Province. According to Xinhua Compendium of Materia Medica, this medicine has pungent taste and cool nature, and has the functions of dispelling cold, relieving exterior syndrome, lowering blood pressure and strengthening heart. Coleoptera is rich in zinc. Zinc is directly involved in the synthesis and tissue metabolism of nucleic acids and protein, which affects cell classification and regeneration. The research shows that iron and copper ions and their complexes have obvious antibacterial and anti-inflammatory effects, and the drug is an organic compound rich in iron and copper. In addition, the drug is rich in selenium with anticancer effect, and its content is obviously higher than that of garlic, a selenium-rich plant. Cang Xie Chrysanthemum is a kind of black chrysanthemum which is abundant in eastern Henan. Since ancient times, the local people have known that it has the functions of "improving eyesight, benefiting gallbladder, clearing away heat and detoxifying", so the local people have always kept the custom of "drinking Cang Xie chrysanthemum tea for health preservation". In addition, chrysanthemum is also made into preparations for treating certain diseases alone or together with other drugs. In recent years, in order to further develop its functions, oral liquid, wine and other deep-processed products of Cang Xie chrysanthemum have come out one after another. Cang Xie chrysanthemum is rich in zinc, copper, iron and other elements. Qin Yiming et al. determined trace elements in kiwifruit plants collected and identified by Guangxi Institute of Botany. The results showed that all eight kiwifruit plants contained 1 1 essential elements. Among the eight plants, the contents of P, Ca, Mg, Zn and Fe are generally high, among which the highest content of Ca is above 1 100ug/g, and other elements are also high. The therapeutic effect of effective components of traditional Chinese medicine is related to the existence of trace elements. For example, P has the functions of neuromodulation, hypnosis and analgesia. Iron, manganese, calcium and zinc have the functions of nourishing blood, benefiting liver and tonifying kidney. Sesame was called flax, oil hemp, chrysanthemum, fat hemp, black hemp and Ji Fang in ancient times, belonging to the genus Panicum. It is an important oil, a common food and a good tonic. Sesame can be divided into black and white. Traditional Chinese medicine believes that white sesame seeds are better to eat and black sesame seeds are better to be used as medicine. Sesame is rich in selenium, potassium, calcium, magnesium, iron, manganese and zinc, and the content of black sesame is higher than that of white sesame. It shows that the nutritional value and medicinal value of black sesame are higher than that of white sesame. Aloe arborescens is a perennial succulent plant of the genus Aloe in Liliaceae, native to South Africa. Aloe has long been developed into medicine and health care products abroad, but the development and utilization of aloe in China has just started. Aloe arborescens contains several essential elements, especially calcium, which are closely related to the growth and development of human body. Children with calcium deficiency have slow growth and development, muscle spasm and severe mental retardation. In addition, the contents of zinc, calcium, iron, manganese and strontium are also significantly higher than those of ordinary plants. Zinc is directly involved in cell metabolism. Copper and iron are related to the hematopoietic function of the body, and the lack of copper and iron will cause nutritional anemia. Aloe arborescens also contains germanium. Paslin. Portulaca oleracea contains inorganic elements necessary for human body, such as calcium, magnesium, phosphorus, potassium, zinc, manganese, copper and selenium, among which calcium, magnesium and potassium are several times higher than vegetables, and its potassium content is very high (1013.36 mg/100g), higher than that of Chinese cabbage and pumpkin. Trace element selenium is 1.5 times that of Chinese cabbage and 10 times that of pumpkin. Portulaca oleracea products are: Portulaca oleracea powder, processed with fresh Portulaca oleracea and tomatoes; Portulaca oleracea juice is made by squeezing fresh Portulaca oleracea; Quick-frozen purslane, dehydrated purslane, is a kind of wild seasonal food, which can be eaten all year round. Asparagus, scientific name Bai Xi, is a perennial herb of Asparagus in Liliaceae. Rich in trace elements such as selenium, zinc and iron. The asparagus foods developed are: asparagus wine, which is fermented from asparagus and grapes. Asparagus beverage is made of bamboo shoot clothes and bags. Bamboo shoot juice is used as raw material, and sucrose, citric acid, honey and salt are added to make bamboo shoot juice beverage, which is sweet and sour. Cactus grows on sandy soil along the coast. Hainan Island has a tropical maritime climate, and its rich cactus is a valuable green resource in China. It contains trace elements such as iron, zinc, calcium, selenium and so on. Adding cactus sauce into vermicelli can make vermicelli attractive in color and rich in nutrition, and play a health care role of homology of medicine and food. 2. Animal foods eaten by natural animals are mostly poultry meat and blood, while animals used as medicinal foods are rare or rare, which are not easy to obtain. However, there are also many studies on drugs and edible animals, and their components are analyzed in the study. These drugs and foods also contain foods rich in certain trace elements. The following are some animal foods or medicines rich in trace elements. Polyrhachis vicina is an ant family. Also known as stinging ants and big black ants, it is mainly produced in Guizhou, Yunnan, Guangxi and other provinces. Taste salty and flat, ant eggs are sweet, and enter the liver and kidney. It contains many trace elements, especially zinc. At present, there are also preparations made of ants and other traditional Chinese medicines for treating hepatitis, rheumatism, rheumatoid diseases, diabetes and other diseases, and there are many health foods in the form of oral liquid and alcohol. The puffer fish is a two-level oriental dolphin, which is produced in Lianjiang coastal area of Fujian. A substance extracted from the liver and ovary of puffer fish has the biological function of agglutinating animal red blood cells. Through ICP-AES quantitative analysis, it is found that it contains trace elements such as cadmium, copper, iron, manganese, nickel, selenium, strontium, zinc, aluminum and chromium. Except cadmium and zinc, the trace elements extracted from ovary are higher than those extracted from liver. Bear bile is a traditional Chinese medicine for treating eyes, and its source is the dried gallbladder of Xiong Ke animal black bear or brown bear. Li Feng et al. detected four identical trace elements in bear bile and its adulterants by atomic absorption spectrometry, and found that the trace elements Fe, Zn, Cu and Mn in bear bile were higher than those in adulterants. Cladosporium Horqin likes omnivores, has strong adaptability and anti-epidemic ability, short growth cycle and is easy to breed and reproduce. Chelated meat is a good food, sweet and salty, and tastes similar to prawns and lobsters. Wang Rujuan and others found that the contents of several major trace elements such as manganese, iron, zinc, cobalt and selenium and the metal element germanium which is beneficial to improving the immunity of the body are higher than those of sea cockroaches and river cockroaches. Generally speaking, chelated trace elements are mainly concentrated in the head shell, especially the manganese content is 6 times that of the fleshy part. Shrimp is not only a delicious food on the table, but also has high nutritional value and medicinal value, which can be called a good nutritional and health care product. Wang Rujuan and others determined the trace elements in different parts of prawn, and thought that most of the trace elements were concentrated in the head shell. Compared with ordinary animals (cattle, sheep and pigs), the content of trace elements in prawn meat is ten times higher than that of calcium, selenium and copper, and the content of magnesium, zinc, iron and manganese is also higher. In addition, it also contains germanium with health care function. Horse-maned snake and horse-maned snake are color-changing tree lizards of Ranunculaceae, which have the functions of nourishing and strengthening, expelling wind and promoting blood circulation. Soaking in wine or steaming with lean meat can treat blood deficiency and iron weakness, infantile malnutrition and so on. Horseshoe snakes are mainly produced in Guangxi. Xie Jinxian and others determined the composition of snake body and snake tail by atomic absorption spectrometry. The results show that the contents of trace elements such as iron, zinc, manganese, chromium, selenium and germanium are high, and the tail of snake is higher than the body of snake. Pig blood has high nutritional value. Pig blood is rich in porphyrin iron, which is easily absorbed by human body, so it is a good iron supplement and has a good curative effect on iron deficiency anemia. Its products include blood sausage and bean curd with scattered blood. Tianjin Food Research Institute has developed boxed pig blood tofu, which is more conducive to storage and transportation.