We present herein a case of generalized pustular psoriasis in a 17-month-old female infant, who showed good response to etretinate therapy. The baby showed generalized pustular eruptions with high fever and marked leukocytosis preceded by annular scaly erythematous and annular pustular lesions. Etretinate was given in a dose of 10mg(0.75mg/kg/day) for 10 days, and then tapered to 7mg, 5mg, and 4mg in every 10 to 13 days. Clinical improvement was noted after 7 days' treatment and almost all of the skin lesions including erythroderma were cleared after 6 weeks' treatment. She is now maintained with 3mg of etretinate without recurrence.