Electrospun fiber can also be used as a drug slow-release material, so that drugs can be released gradually along with the degradation of carrier materials and keep the efficacy unchanged, and it has no toxic effect on human body. It is an excellent drug carrier. After mixing the drug and the carrier material, spinning will be carried out, and the spun fiber will contain the drug particles or fibers of ultrafine or even nanometer level, which will greatly increase the surface area of the drug and accelerate the decomposition and absorption rate in the human body. The drug that is difficult to be absorbed by the human body will also be well absorbed and utilized.