In the early 1960s, Jiang Chunhua put forward the theory of "combining disease differentiation with syndrome differentiation", arguing that "it is necessary to treat diseases and seek medical treatment, but it is not necessary to abolish treatment based on syndrome differentiation, and doctors need to recognize diseases and treat them based on syndrome differentiation, so as to combine disease differentiation with syndrome differentiation". Syndrome differentiation and treatment is the essence of traditional Chinese medicine, but it is not perfect. He once said, for example, some diseases are cured, but they are not cured, and there is no evidence to distinguish. For example, chronic nephritis can often be seen that all symptoms are cured and proteinuria has not disappeared, so the problem cannot be solved. For patients with coronary heart disease, doctors know that the coronary blood supply of the disease is insufficient, and combined with the yin deficiency of the syndrome, they can often treat both the disease and the syndrome and improve the curative effect. Therefore, he advocates that, first of all, syndrome differentiation and treatment is the soul of Chinese medicine, and it must not be lost, otherwise it will lose the spirit of Chinese medicine, which is for sure; But it is also necessary to prescribe the right medicine, not only to treat the disease, but also to neglect both. As the theory of health preservation points out, "diseases have internal differences and external similarities, and external differences and internal similarities." Symptoms alone are not enough to see through the essence of diseases, and the different diseases you refer to may actually be the same disease; And the same disease you mentioned may be different diseases. Modern medical detection means can make up for the differential diagnosis of diseases. Only by combining disease differentiation with syndrome differentiation can we make a clear diagnosis, adapt syndrome differentiation to the condition and use drugs according to the source of the disease.

For decades, Jiang Chunhua has not only paid attention to syndrome differentiation and treatment, but also repeatedly explored and verified folk prescriptions, prescriptions and special drugs for specific diseases, such as treating chronic nephritis with black beans and Juechuang, treating cough with puffball, meat shell and Nandina domestica, relieving asthma with fennel, dried peach and geranium, treating dysentery with Pulsatilla decoction combined with ginseng and rhubarb, treating lobar pneumonia with Houttuynia cordata and Commelina communis, and treating stiff silkworm. He pays attention to thinking, dares to explore, and does not stick to old theories. Regarding the treatment of jaundice, the predecessors said that "treating jaundice is not a cure", but he said that "treating jaundice is not a cure", so he returned to Huang Zhi without using wormwood and Wuling ointment, and used rhubarb and Dancaotong to relieve bitter diarrhea, with particularly good results. For some chronic diseases, he is brave and resourceful, and dares to use drugs to defeat them. For example, Zijindan (arsenic, alum and lobster sauce) for treating cough and asthma has an immediate asthma relieving rate of over 70%. The preparation method, indications, drug reaction, dose control and toxicity test of arsenic were also reported. In the compatibility of traditional Chinese medicine, people participated in the treatment of Wuling zhi, which followed Li Zhongzi's theory and was often used to treat hepatosplenomegaly with remarkable curative effect. For some patients with hemoptysis caused by rheumatic heart disease, ginger and additives are given to stop bleeding. For obstinate arthralgia, warming and dispersing arthralgia, expelling wind and dredging collaterals are the main methods, and the dosage of Radix Rehmanniae is increased to cool serum, nourish yin and moisten collaterals, both warm and cool, and combine rigidity and softness, so that cold arthralgia can be cleared from warm and clear, blood stasis can clear heat, meridians can be unblocked, and obstinate arthralgia can be solved. In a word, Jiang Chunhua is very original in treating diseases. He not only has rich experience in the treatment of hepatitis and liver cirrhosis, but also has in-depth research on nephropathy, asthma, rheumatic heart disease, endocrine diseases and spleen and stomach diseases, and has made certain achievements.