A gel injection valve comprising a main body, a secondary body, sealing components, and a sealing encapsulation device. The main body is fixedly connected to the secondary body. The main body has a cavity, while the secondary body has two cavities. The sealing components are fixed between the main and secondary bodies. The rear end of the sealing encapsulation device is fixed to the sealing components, isolating the cavities through the encapsulation device. The secondary body is equipped with an inlet and outlet for gel, which are connected to the two cavities. Inside the sealing encapsulation device, there is a storage cavity connected to the two cavities.