Air conditioning can cause many diseases after blowing for a long time will seriously affect health, especially in the hot environment from the outside into the low temperature of the indoor air conditioning environment, it is most likely to fall many diseases, often manifested in the following areas: 1, the emergence of cold, wind cold will cause immune abnormalities, there will be a runny nose, sneezing, headache, dizziness and a series of uncomfortable symptoms, should be promptly to the hospital for symptomatic treatment. 2, air conditioning after blowing for a long time will also cause arthritis, especially will cause frozen shoulder and induce the original rheumatoid arthritis attack, should also go to the hospital for symptomatic treatment. 3, air conditioning after blowing for a long time will also affect the central nervous system, due to the head vascular spasm contraction and headache, dizziness, nausea and other uncomfortable symptoms, should also go to the hospital for timely symptomatic treatment.