Drug eluting balloon catheter

According to the technical scheme, the drug eluting balloon catheter is characterized by comprising a pushing rod, a positioning rod is fixedly installed at one end of the pushing rod, a stabilizing hole is formed in one side of the pushing rod, a sleeving hole is formed in one side of the positioning rod, and the positioning rod corresponds to the sleeving hole in position; the outer circle wall face of the positioning rod is movably sleeved with an air bag. The diffusion assembly is arranged at one end of the air bag and is used for diffusing the coverage range of the medicine, the medicine can be contained in the placement block by arranging the placement block, and the situation that the medicine in the placement block is released under the condition that diffusion is not needed is avoided by utilizing matched splicing of the placement block and the splicing block; the splicing block can open and separate the placing block and the splicing block when the air bag is expanded, so that the internal medicine