Objective To explore the effect of methylprednisolone combined with high dose immunoglobulin (IVIg) in treatment of severe bullous skin disease. Methods 51 cases of severe bullous skin diseases were randomly divided into control group and observation group and control group received conventional methylprednisolone treatment on the basis of the observation group in this high-dose injection combined with IVIg,therapeutic effect were observed.Results The observation group hospitalization days ( 15.6 ± 6. 2) d, hormone usage ( 87. 6 ± 13.7 ) mg, hormone reduction time(8. 6 ±2. 4) d,were obviously lower than the control group(23. 1 ±6. 3)d,( 105.3 ± 1.64) mg, ( 13.8 ±4. 1 ) d ( t = 2. 771,3. 102,3. 219, P ＜ 0. 05 ). The observation group total effective rate was significantly higher than the control group( x2 =6. 248,P ＜0. 05). The observation group therapy effect-acting period and obviously subsidise lesions time was(8. 9 ±2. 4)d, (17.6 ±3. 7)d respectively,were significantly lower than the control group( 13. 1 ±3. 8) d, (23. 6 ± 5. 1 ) d, the differences between the two groups were statistically significant ( t = 2. 893,3. 347, P ＜0. 05). The observation group complication occurred in 5 cases were lower than those of the control group of 9 cases (x2 = 5.245 ,P ＜ 0. 05 ). Conclusion Methylprednisolone combined with high dose IVIg treatment of severe bullous skin disease could shorten the course and speed up the restoration of skin lesions, reduce and alleviate the glucocorticoid dosage and side effects, improve the cure rate , and it was worthy of promotion.