In order to establish the evaluation system of smut resistance for sugarcane varieties,nine introduced sugarcane varieties were chosen and a field experiment including six other control varieties was conducted.By means of manual dipping inoculation,smut resistance for tested sugarcane varieties was evaluated on the basis of analyses on three infected indexes of the area under disease progress curve,infected rate of stalk,infected rate of plant and on two disease epidemic parameters of latent infection period(LIP) and sustained disease duration(SDD).Systemic cluster analyses based on correlation coefficients of these parameters showed that ROC26 was sensitive to smut infection and the other varieties were resistant in nine introduced varieties.Positive significant correlation between three infection indexes and SDD,and negative insignificant correlation between infection indexes and LIP were found.Fifteen sugarcane varieties could be divided into 6 groups on the basis of the distance more than 1.0.It resulted most ot tested sugarcane varieties had similar smut resistance.It suggested that smut race 1 and race 2 were included in inocula and the condition for Ustilago scitaminea infection was suitable in the crop season by setting up the standard varieties of NCo310,F134,NCo376 and Ya71-374 for smut identification.In addition,the results of sugarcane varieties resistant to smut race 1 and race 2 were known by only a simple field trial.From above,a feasible evaluation system for sugarcane smut resistance was established.