A memory alloy internal fixing instrument for anatomy locking of the scapula coracoid area is made of memory alloy, is a whole fracture-setting steel plate, is divided into four parts including a scapula mesoscapula part, a scapula acromion part, a joint bridging part and a scapula coracoid part, and is suitable for facture of the scapula coracoid part, the scapula mesoscapula part and the acromion part. The shape of the memory alloy internal fixing instrument is designed according to the physiological anatomy shape of the scapula coracoid part, the scapula mesoscapula part and the acromion part, and the memory alloy internal fixing instrument can connect and stereoscopically fix the scapula coracoid part, the scapula mesoscapula part and the scapula acromion part together. The memory alloy internal fixing instrument for anatomy locking of the scapula coracoid area is good in elasticity and strength and can be processed in a bent, twisted and sheared mode freely according to the fixation need of a fracture operation. In addition, the memory alloy internal fixing instrument is convenient to shape and install, external fixation is not needed after the operation, early function exercise of the shoulder joint is facilitated, and postoperative ankylosis is prevented. By means of the memory alloy internal fixing instrument, the curative effect is improved, complications are reduced, a complex operation is simplified, operation risks are reduced, and the memory alloy internal fixing instrument is worth popularization.