Objective To study the curative effect of calcipotriol ointment combine with narrow-band ultraviolet B on psoriasis.Methods Seventy patients who compared with themselves were recorded as two groups.Lesions of all 70 patients treated with calcipotriol ointment plus narrow-band ultraviolet B phototherapy were recorded as the treatment group while lesions only treated with narrow-band ultraviolet B phototherapy as control.Results After 3 courses of the treatment,the efficacy rate was 81.43% in the treatment group,and was 57.14% in the control group.The comparison between the two groups was significance (P0.05).Conclusion It is effective to treat psoriasis using calcipotriol ointment combined with narrow-band ultraviolet B phototherapy