Abstract: In this papcr, the relationship bbe solar activities and diseases is investigatal by using observed data of solar actvities and stahstical data of diseases in Epidemic Prevenlion Station of Jiangsu Province in 22 years, the curves for reative ratio of various diseases and the reative number of sun spots with time are drawn, and their reatal coeffidents are calculated'The results show that there are some reations between solar activities and the inddences of anrle fever, hepatitis and polio, especially the anrlet fever,Whose correation coefficient is as high as 0.72.