Precise liquid control valve

The utility model provides a precise liquid control valve which comprises a valve body, a pneumatic valve, a connecting piece and an electromagnetic valve. The connecting piece is arranged between the electromagnetic valve and the pneumatic valve, and the electromagnetic valve is provided with an air inlet, a first air outlet, a second air outlet, a first exhaust port and a second exhaust port. The connecting piece is provided with a first gas channel and a second gas channel, and the first exhaust port and the second exhaust port are communicated with the first gas channel and the second gas channel respectively. A first air supply port and a second air supply port are formed in the pneumatic valve and communicate with the first air channel and the second air channel correspondingly. According to the utility model, the response speed between the electromagnetic valve and the pneumatic valve is improved, the response time is 0.1-0.4 second, and the electromagnetic valve can be applied to the rapid closure of