[Problem] The present invention is to provide a drug coating layer which has low toxicity and a high intravascular stenosis inhibitory effect, when delivering medical device coated with a drug into the body and medical device using the same. The drug coating layer is a drug coating layer having a morphological form including a plurality of elongate bodies having long axes that each crystal of a water-insoluble drug independently has on a substrate surface, in which the long axes of the elongate bodies are nearly linear in shape, and the long axes of the elongate bodies form an angle in a predetermined range with respect to a substrate plane with which the long axis of the elongate body intersects.