By using attapulgite(AT) and fumed silica(FS) as composite reinforcing filler to reinforce methyl-vinyl silicone rubber(MVQ),a MVQ composite with perfect mechanical properties and thermal stability was prepared.The effect of various AT/FS filling ratios on the mechanical properties of vulcanizate mixture was investigated,and its thermal stability was studied by thermal analysis(TG,DTA).The results showed that the mechanical properties and thermal stability of MVQ can be remarkably improved by filling hybrid of AT and FS.