The present invention discloses a combined push type bone marrow extractor. The combined push type bone marrow extractor comprises a cylindrical outer shell, an anesthetic needle, a marrow extractingneedle and a puncture needle, one end of the cylindrical outer shell is provided with a sealing bottom plate, the other end of the cylindrical outer shell is movably provided with a rotating cover, the anesthetic needle, the marrow extracting needle and the puncture needle are all movably inserted in the rotating cover, a needle hole is arranged in the sealing bottom plate, besides, an inner sideof the needle hole is provided with a fixed hole, the puncture needle comprises a needle cylinder and a push-pull rod, a sliding hole is arranged in a front end of the needle cylinder, the sliding hole is internally movably provided with a fixed sleeve in a clamping manner, one end of the fixed sleeve is fixedly connected with a puncture needle head, one end of the push-pull rod is movably inserted in the sliding hole, and the other end of the push-pull rod is fixedly connected with a push-pull plate. Only one-time puncture is needed to finish operations of anesthetic injection and marrow extracting, puncture times are reduced and pains of patients caused by puncture are reduced; and a positioning structure is arranged on the surface of the device, can fix the device during the puncture and marrow extracting, conveniently completes the whole puncture and marrow fluid extraction work, at the same time can prevent needle head vibration during the puncture and marrow extracting, and the pains of the patients are avoided.