The occurrence of heavy muscle is the result of the combined effect of various factors in all aspects. 1, congenital deficiency Since the beginning of fertilization, from the parents of the congenital essence deficiency, in the process of conception and due to a variety of reasons to absorb the essence of the material is not enough, such as maternal malnutrition, disease, prolonged illness, undergoing surgery, or have bad hobbies, etc. resulting in the birth is a lack of essence of the body. This lays the groundwork for future morbidity. Some of them are even sick at birth, or under 10 years old. After birth, in the process of growth, due to malnutrition, organs, meridians, bones, muscles do not get due moistening, stunted development; irregular work and rest, excessive exertion (including excessive work, excessive sex, etc.), the body does not get effective rest; careless diet, resulting in too much vomiting, depletion of fluids; seven emotions are not regulated, life, learning and work process, can not be well The seven emotions are not regulated, the process of life, study and work, can not be well adjusted to the emotions, resulting in the five will over-polarization of fire, damage to the body’s vital energy. In the long run, resulting in the organs, meridians, the body has a serious shortage of supply. 3, external six evil Some people due to poor health, often a variety of infections; or direct trauma such as car accidents, knives, insect and animal bites; or suffering from serious illnesses, serious illnesses, long illnesses, coupled with the loss of treatment and mismanagement, or experience a major surgery, and after the disease and the loss of care, resulting in insufficient supply or direct damage to the organs, meridians and form. 4, diet carelessness Women due to pregnancy, miscarriage too many times; or pregnancy age menstrual disorders, menopause, resulting in blood does not follow the menstruation, the vital energy is greatly injured; or have bad habits, such as smoking, alcohol, unclean sex, etc.; or taking a certain drug, resulting in deficiency of vital energy, organs and meridians form supply is insufficient or directly damaged, thus inducing myasthenia gravis. In summary, all of the above can lead to the occurrence of myasthenia gravis. In general, the occurrence of myasthenia gravis is due to congenital deficiency and loss of nourishment; external exposure to six evil spirits, internal disorder of the seven emotions; careless diet and living and other factors that lead to the loss of moistening of the organism, resulting in various symptoms of deficiency.