The invention discloses a repeatedly usable ultrasonic scalpel. The repeatedly usable ultrasonic scalpel comprises a transducer, a gun grip, a soleplate, and a cutter bar assembly, the cutter bar assembly comprises an inner sleeve and an outer sleeve, the inner sleeve is connected to the soleplate by a clamping mechanism, the outer sleeve is connected to the soleplate by a fixing mechanism, the clamping mechanism comprises a limiting seat, a cylinder, an insert block and a guiding cross plate, the insert block can be inserted into the inner sleeve, the fixing mechanism comprises a driving motor, a screw, a support plate, a guiding slider, a supporting link and a positioning block, and the positioning block is mounted on the outer sleeve. According to the repeatedly usable ultrasonic scalpel, the outer sleeve and the inner sleeve can be removed from the soleplate by the clamping mechanism and the fixing mechanism, so as to facilitate the next use of the ultrasonic scalpel, the inner sleeve and the outer sleeve can be quickly installed or disassembled by the clamping mechanism and the fixing mechanism, the use is convenient, the entire ultrasonic scalpel does not need to be discarded, and the waste of resources can be effectively avoided.