This Study proposes an innovative auxiliary device to solve the low back pain (LBP) caused by veterinarian’s poor work posture. In recent years, with the heightened status of pets in people’s lives, the demand in animal hospitals has increased significantly, and the occupational hazards of veterinarians have also emerged gradually. Veterinary work environment is complex and diverse, and working hours are overly long, which can easily cause the issue of the LBP. Among the patients with the LBP, many people are classified as non-specific low back pain (NSLBP). This means that there is no known pathological anatomy for the LBP itself, and its principle is strongly related to the compressive load of the spine. NSLBP should be considered as a change in the structure of the whole body’s spine. Poor posture can lead to imbalance of curvature of the spine and damage to soft tissues. This Study begins with the posture state of the veterinary surgery, where biomechanics and physiological anatomy are used to target the interaction of the lower back and shoulder flexion angles during the operation of the veterinarian, and to consider the results of the blood flow when the muscles are tight. This Study will design an auxiliary device for the veterinary surgery to effectively reduce the mechanical load on the spine, overstretch the muscles and promote blood circulation, thereby improving the fluency of the veterinary surgery and slowing the veterinarian’s NSLBP.