Eccrine hidrocystoma is a benign eccrine duct-derived cyst which may be solitary or multiple. We report two cases of multiple eccrine hidrocystoma, which have two points of sameness in middle aged women and worsening of the condition in summer and improvement in winter. Recently, the incidence of multiple eccrine hidrocystoma seems to be decreasing due to well-developed cooling devices in summer. In spite of its decreasing incidence, we think that it is still noteworthy to keep in mind the possibility of eccrine hidrocystoma when a patient presented with multiple facial papules in hot season. (Korean J Dermatol 2000;38(10)：1388~1391)