The utility model provides a cardiovascular stethoscope for medical treatment, include two -way spiral shell rasp bar, hollow tube, connecting rod, last snap ring, bolt, go up connector link, lower connector link, lower clamping ring and sucking disc, go up snap ring lower extreme installation lower clamping ring, two -way spiral shell rasp bar outer end installation hollow tube, the hollow tube outer end sets up the connecting rod, and this design can be contract the connecting pipe, go up the snap ring outer end and install the connector link, the assembly of lower clamping ring outer end isthe connector link down, it is connected with lower connector link through the bolt to go up the connector link, going up snap ring right -hand member and lower clamping ring right -hand member and all installing the sucking disc, this design can be gone on fixedly fast, the utility model discloses convenient to use, the operation of being convenient for can prolong the connecting pipe, and it isfixed to carry out the automation, and stability is good, and the reliability is high.