Abstract: Environmental hormone is a kind of external chemical substance which may disturb the incretion of human beings and vertebrates. Within the 67 organic substances known as environmental hormones, 44 are agricultural chemicals (herbicides, insecticides and fungicides) or their metabolites. 24 out of the 47 investigated environmental hormones have been detected during the investigation. The influences of environmental hormones to the fertile and physiological functions of human beings and animals were discussed. It has been pointed out that the idea of developing so called "Safe chemical pesticides" is not acceptable.