There are many methods for treatment of solitary bone cyst. But the recurrence rate was relatively high and beside, serious complications may be followed. Recently, simple topical of steroid into cyst was contrived and the result was know as same or even better than surgical management. A patient of solitary bone cyst who had been failed two times by surgical intervention was treated with topical steroid injection for several times. Two years following up, the result was good. No evidence of recurrency was seen and was shown good healing process