Provided is a sustained release carrier for drugs, which uses a silk fibroin porous body, has high strength and high sustained release efficiency for drugs, and is capable of controlling the sustained release rate for drugs. This sustained release carrier for drugs is able to be easily handled, and is gentle to the skin by having high biocompatibility. In addition, this sustained release carrier for drugs has high water retainability and is capable of efficiently holding a drug.提供一種使用絲蛋白多孔質體之藥劑緩釋載體,其藥劑緩釋率高,並可控制藥劑緩釋速度,強度較高而容易操作,又因生物相容性高而對皮膚較為溫和,且保水性高,可有效地保持藥劑。