现行1995年版《中国药典》收载煎膏剂成药共7种，除二冬膏外，其它6种均需检查相对密度，而且分两种检测形式：一种是以测得的稀释状态相对密度为指标，如益母草膏、川贝雪梨膏和养血定悸膏；另一种是按煎膏剂通则项下测定换算的原膏状态相对密度为指标，如养血清肺膏、夏枯草 The current 1995 edition of the “Chinese Pharmacopoeia” contains 7 kinds of decoction preparations. In addition to the two winter pastes, the other 6 species need to check the relative density, and it is divided into two detection modes: one is the measured relative density in the diluted state. Indicators, such as the motherwort ointment, the Chuanbei Sydney ointment and the nourishing stimulant ointment; the other is according to the general conditions of the decoction ointment measured conversion of the original state of the relative density as indicators, such as Yangse lung paste, Prunella vulgaris