Two hundred ROSS broilers at age of 21 days were designed to five treatment groups for the studies of mycotoxin absorbent on broiler growth performance,including group 1(the positive control,no aflatoxin),group 2 (the negative control,250 mg·t-1 aflatoxin addition),group 3 to 5(with three dose of mycotoxin absorbent each on base of the negative diet).The results showed that the final body weight and average daily gain for group 1,4 and 5 broilers were higher than group 2 and 3(P0.05).The average daily feed intake for group 2 broilers was lower than those of group 1 and 5(P0.05).The feed conversion efficiency for group 1,4 and 5 broilers were upper than those of group 2 and 3(P0.05).These findings suggested mycotoxin absorbent additive could decrease the risk of dietary mycotoxin for broilers.