In order to study the effects of Yunnan temperature and humidity of the power equipment reliability and safety,by analyzing the operation of the electrical equipment of four seasons in Yunnan, built up a set of experimental platform about environment based on power equipment. The platform is the use of strengthen the main environmental factor and artificial simulation method. Under laboratory conditions, it is rapid to evaluate resistance to extreme weather about power equipment. Test results show that the impact of the experimental platform can truly ensure the safety and reliability of electrical equipment and evaluate Yunnan region seasons temperature and humidity on power equipment.