The utility model provides a stethoscope with a contact-prevention device in a medical nursing process, and relates to a stethoscope. Two ends of a rubber hose (2) are respectively connected with a U type metal tube provided with a receiver (1) and a connecting tube (8) on a protruding block (10) on the back of a pickup plate (9); and corresponding notches (6) are respectively formed on two sides of a lower port of a sleeve cover (7), besides the notches, a rubber inner face (5) is arranged on the inner face of the sleeve cover, one end of a rod body (4) is connected with the upper face of the sleeve cover through a fixing screw (3), the rubber inner face of the sleeve cover is sleeved on the protruding block of the pickup plate, and the notches of the sleeve cover are clamped on the connecting tube (8) of the protruding block. According to the stethoscope, the rubber inner face in the sleeve cover is fixedly connected through the protruding block of the pickup plate, so in using of the stethoscope, the fact that the rod body is held by hand enables the stethoscope to be far away from the body of the opposite sex, and auscultation can be conveniently carried out by a doctor.