A self-priming oil suction pump specially designed for maintenance cleverly uses a hand drill or electric wrench as the power source. Just quickly connect the equipment to the tool to drive the oil pump to operate, achieving efficient extraction of engine oil, transmission oil and other types of oil. Say goodbye to the tediousness of traditional manual oil suction. With the strong and stable power output of electric tools, the oil suction efficiency is greatly improved. It is especially suitable for scenarios such as automobile maintenance and mechanical maintenance, making the oil change work easy and convenient.