In order to assess its eco-environmental behavior and effect of fenvalerate, the degradation behavior in six kinds of soil planted tobacco was analyzed by methods of gas chromatography and the indoor simulation, those soil tested come from the following areas:Hunan Xiangxi, Yunnan Baoshan, Guangdong Nanxiong, Henan Sanmenxia, FujianGuangze, andShandongTai'an, respectively. The results showed that the degradation rate of fenvalerate in the soil from Henan Sanmenxia was the fastest, its T1/2 was only 8.27 d, and the degradation rate of fenvaler...