Pitaya, also known as fairy fruit, auspicious fruit and red dragon fruit, belongs to tropical and subtropical plants. Its fruit is bright in color, rich in nutrition, low in fat, high in fiber and low in calories, and has obvious therapeutic and health care effects. Pitaya is divided into three categories: red skin and white meat, red skin and red meat and yellow skin and white meat. Due to the variety and geographical differences, there are many names. In Taiwan Province Province, red meat pitaya includes Lotus Red Dragon, John Lone, Rose Red Dragon, Xianglong, Xianglong, Zhu Long and Tianlong. White meat varieties are often called white honey, fairy honey fruit and white meat dragon fruit. In other Asian regions, it is usually called red pitaya and green pitaya.

Pitaya is rich in nutrition and unique in function, which has excellent effects on human health. It contains plant albumin and anthocyanins, rich vitamins and water-soluble dietary fiber, which are rare in general plants. Albumin is a viscous colloidal substance, which has detoxification effect on heavy metal poisoning. When albumin meets heavy metal ions in the human body, it will automatically combine with heavy metal ions and be excreted by the excretory system, thus playing the role of detoxification. Therefore, eating pitaya rich in albumin can avoid heavy metal poisoning. Albumin also has a protective effect on the stomach wall. Moreover, the albumin in the flowers and stems of pitaya is excellent and stable, and the polymerization of these albumin constitutes the main component of pitaya mucus. Pitaya is rich in albumin and has a special component-anthocyanin. Grape skins, red beets and other fruits and vegetables all contain anthocyanins, but the content of anthocyanins in pitaya is the highest, especially in red meat fruits. It has antioxidant, anti-free radical and anti-aging effects, and can also improve the prevention of brain cell degeneration and inhibit the occurrence of dementia. At the same time, pitaya also contains vitamin C for whitening skin and rich water-soluble dietary fiber, which has the functions of losing weight, lowering blood sugar, moistening intestines and preventing colorectal cancer.

Pitaya contains rare plant albumin and anthocyanin, rich vitamins and water-soluble dietary fiber, which has detoxification effect on heavy metal poisoning. Chinese medicine believes that pitaya has a unique effect on relieving cough and asthma, and also has many effects such as preventing constipation, preventing senile diseases and inhibiting tumors. Modern medical research believes that pitaya is rich in vitamins and minerals, high in fiber and low in calories, and has a good effect on modern epidemic diseases such as diabetes, hypertension, high cholesterol and high uric acid. Among them, the content of phosphorus is quite high, which can promote the formation of cell membrane and is a good product for beauty and health care.

Chinese medicine believes that carambola has the effects of clearing away heat and toxic materials, promoting fluid production and diuresis, and is suitable for wind-heat cough, toothache, oral ulcer, urethral calculus, alcoholism, dysuria, etc., especially for cancer patients receiving radiotherapy. Eating carambola can protect mucosa from injury, but people with abnormal renal function must not eat it.