In the field of traditional Chinese medicine, red pitaya, as a cold food, can help patients with hypertension to play an auxiliary treatment role, and pitaya has the function of clearing heat and lowering blood pressure. Pitaya has elements of health care, beauty care, disease prevention and body building. The branches and flowers of pitaya contain a lot of nutrients and therapeutic substances. It can effectively prevent constipation, promote eye health care, increase bone density, help cell membrane formation, prevent anemia and neuritis, angular stomatitis, reduce cholesterol, whiten skin, prevent dark spots, relieve heavy metal poisoning, resist free radicals, prevent senile lesions, lose weight and prevent colorectal cancer. The latest research results show that the juice of pitaya fruit and stem also shows positive effects on tumor growth, virus and immune response inhibition.