[Objective] The purpose of the study was to discuss the effects of 6-BA with different concn.on the branching of chrysanthemum.[Method] With shoot tips and stem segments of pollution-free and growing strongly chrysanthemum tissue culture seedlings as explants,6-BA at 0(CK),0.1,0.3,0.5,0.7 and 0.9 mg/L were added into MS media resp.and the branching of chrysanthemum was observed.[Result] The variance analysis showed that there was extremely significant difference among treatments(P<0.01).The multiple compari...