Objective To explore the usage characteristics of boiled powder in Prescriptions of the Bureau of Taiping People’s Welfare（ 《太平惠民和剂局方》） to provide guidance and references for application of boiled power in modern times. Methods All boiled powder cases in the Prescriptions of the Bureau of Taiping People’s Welfare were collected. Informations including the particle size of the boiled powder

the amount of each serving

the amount of water added

the amount of residual water

the time of taking the medicine

the temperature of taking the medicine

the number of daily servings

whether removing slag

etc. were extracted from the boiled powder formula that meet the standards. A database of the Prescriptions of the Bureau of Taiping People’s Welfare boiled powder pediatric group and adult group was established

and the included data was analyzed statistically. Results In Formulae from the Prescriptions of the Bureau of Taiping People’s Welfare

the boiled powder was mainly coarse and fine powder. The singletime dosage for children was about 4 g and using 50 ml water for each of powder

and the single-time dosage for adults is about 8 ～ 12 g and using 25 ml water for each gram of powder. The powder was decocted with gentle fire until the liquid was about 100 ml left for children or 150 ml for adults

and the decoction was deslagged and taken with warm water. Conclusion The boiled powder is easy to be decocted and convenient for administration. The decocting and administration methods are different between adults and children.