A gel valve comprising a main body, a second main body, sealing elements, and a sealing packaging device. The first main body is fixedly connected to the second main body, the first main body having a cavity, and the second main body having two cavities. The sealing elements are fixed between the first and second main bodies. The rear end of the sealing packaging device is fixed to the sealing elements, thereby isolating the two cavities. The second main body includes an inlet and an outlet, both connected to the two cavities. The sealing packaging device contains a storage cavity, which is in communication with the two cavities.