The multifunctional ultrasonic imaging logging tool is an ultrasonic logging tool that uses ultrasonic pulse echo detection method to complete the 360-degree cement bonding quality evaluation of open hole and cased wells, casing wall thickness, and well circumference. The instrument has two working modes to choose from. When working in the imaging mode, it can complete the imaging of the inner wall of the open hole or cased hole. When working in all modes, it can be used to evaluate the deflection casing damage and cement bonding quality.