I. Circulatory disorders 1. Weak heart, unable to make blood supply to the end parts of the body. 2, anemia: insufficient circulating blood or low hemoglobin and red blood cells. 3, the human body vasoconstriction, blood reflux ability will be weakened, so that the hands and feet, especially the fingertips part of the blood circulation is not good, which is often referred to as “poor peripheral circulation”. Second, the lack of Yang Qi Chinese medicine believes that cold hands and feet is a “closed disease”, the so-called “closed” is not pass, affected by factors such as cool weather or cold body Third, menstruation and childbirth caused by hormonal changes in the population with symptoms of cold hands and feet, women account for The vast majority of people with cold hands and feet are women. This is hormonal changes by affecting the nervous system leading to subcutaneous vasoconstriction and reduced blood flow, thus triggering coldness. Disease factors include Raynaud’s disease and Raynaud’s phenomenon, multiple aortitis, which occurs mostly in young women. Thrombo-occlusive vasculitis, on the other hand, occurs mostly in middle-aged men. In addition, excessive mental stress, psychological over-sensitivity, excessive worrying, often distracted people are also a high incidence of cold hands and feet. Fifth, the danger of cold hands and feet for women Cold hands and feet can lead to low menstruation, menstrual disorders, and even infertility; women in menstruation, pregnancy and childbirth and other special physiological periods, due to physical weakness, more likely to cause cold hands and feet. If not prevented in time, it will lead to poor spirit and cold body. Long-term cold hands and feet in winter may also lead to frostbite. Also associated with rheumatism, stomach disease and other diseases.