The Shapes of the Gods of Thunder in China originate from two streams, that is, the depiction in 《Shan Hai Classic》 and that of 《On Balance》 written by Wang Chong(王充, AD 27-97). In this article, I considered the aspects of change in the shapes of the Gods of Thunder centering around Leishen in 《Shan Hai Classic》 and Leigong in 《On Balance》. I also paid attention to that the Leishen's picture in 《Shan Hai Classic》 is different from the description of ‘Dragon's body with human head’. The cultural factor resulting in the gap between the picture and the description is a mixture of two names, Leishen and Leigong. According to this mixture, the shapes of Leigong fixed in after ages that are characterized by drums connected in a row, a wing joint and a bird's beak of a mouth infiltrated into the picture of Leishen in 《Shan Hai Classic》.