1, the physical factors physical mainly from two aspects of the disease transmission role. First, it affects the strength of the positive energy to a greater extent, thus affecting the onset and the speed of transmission. Such as vegetative body is full of people, generally not easy to feel the disease, once the sense of evil onset of rapid, but less change, the course of the disease is also more brief; vegetative body is weak, it is easy to feel the evil, and easy to go deeper, the disease is slower, the course of the disease is lingering and more change. Secondly, in the process of the fight between evil and positive, the evil of the disease “from the chemical” has an important role in determining. In general, the vegetative body of Yang Sheng, the evil from the fire, the disease to the evolution of Yang heat evidence; vegetative body of Yin Sheng, the evil from the cold, the disease to the evolution of cold or cold and other evidence. For example, the same dampness, hot body of Yang, then wet from the sun and heat, the formation of “damp heat”; if the body of Yin cold, then wet from the Yin and cold, become “cold and wet”. 2.Disease and evil factors, disease and evil is an important factor affecting the transmission of disease, in the transmission of the speed of change, as well as the location of the disease, disease transmission are affected by the influence of the evil. The speed of change is directly related to the nature of the evil. For example, in the case of six diseases and evils, generally, the yang evils will change faster, especially the fire (heat) evils, wind evils and summer evils; the yin evils will change slower, especially the wet evils which are sticky and less likely to change. Tropical qi, on the other hand, changes rapidly. Dampness, phlegm, water-drinking and stasis of blood are generally slower in transmission than external evils. In addition, if the evil is abundant, the change will be faster, while if the evil is slight, the change will be slow. Different kinds of diseases and evils have different ways of injuring people, and the paths of disease transmission are also quite different. The external cause of disease to the surface of the change, typhoid fever, more than six meridians change, and warm disease, more Wei Qi Ying blood, San Jiao change. The cause of internal injuries is mainly visceral changes, but also the surface and inside. Plague gas pathogenic force, each has a relatively special pathway of transmission. Trauma also has an important impact on the transmission of disease. Disease from the evil from the chemical mainly by the physical factors, but the changes in the nature of the disease and the properties of the disease also have a certain connection. For example, dryness is a yang evil, it is easier to be transformed from heat; dampness is a yin evil, it is easier to be transformed from cold. 3, geographical and climatic factors The long-term role of geographical factors, the formation of different geographical environment of the physical characteristics of the population and the differences in the spectrum of disease, but also affects the transmission of disease. For example, people living in high and dry areas are more susceptible to heat and dryness after sensing evil, which will hurt yin and drain fluids; while those living in low and wet areas are more susceptible to dampness, which will hurt qi and yang. Seasonal climate has a great influence on diseases, including the influence on disease transmission. For example, in the winter and spring cold season, cold croup, easy to appear outside the cold into the lead within the drink and the onset of change; and Yang Sheng’s body, can be due to the cold outside the bundle of coupling, Yang Qi can not be over and over-exuberance, and even the fire and wind, the occurrence of syncope of the change, which is the change of the internal organs and meridians. 4, life factors, mainly including mood, diet, labor and leisure, mainly through the role of positive qi and affect the disease process. In a nutshell, a good mood, a reasonable diet, proper work and rest so that the disease tends to improve recovery. On the contrary, bad mood, improper diet and inappropriate labor and leisure will make the disease develop and change. For example, patients with mania, can be due to emotional stimulation, resulting in qi depression and fire, hosting phlegm on the heart orifices, aggravate the condition or cause relapse; kidney qi loss of patients, can be due to panic and heavy injury to the essence and impotence and other lesions. Diet on the spleen and stomach, gallbladder, large and small intestinal disease transmission of the relationship is particularly close, and through the transport of water and grain, qi and blood biochemistry of the impact of the disease transmission of the role. In addition, the correct treatment, care, can be timely to block, suspend the development of the disease and change, or make the disease turn into a safe, and even cured. On the contrary, if the medication is not proper, or if the treatment is not proper, or if the care is not proper, the positive energy of the human body can be damaged and the evil energy can be promoted, so that the change of the evidence can be overlapped, and the bad evidence can be produced in a series, and even the prognosis is not good.