A gel valve comprising a main body, a second main body, a sealing component, and a sealing containment device. The first main body is fixedly connected to the second main body. The first main body has a cavity, and the second main body has two cavities. The sealing component is fixed between the first and second main bodies. The rear end of the sealing containment device is fixed to the sealing component, thereby isolating the two cavities through the containment device. The second main body is equipped with an inlet and an outlet for the gel, which are connected to the two cavities. The sealing containment device includes a storage cavity, which is in communication with the two cavities.