Sealing structure for silica gel lifting buckle portable cup

The sealing structure comprises a cup cover and a cup body, the cup cover is provided with the cup body in a matched mode, the upper end of a cup opening is provided with a cup mouth, the caliber of the cup mouth is small, water leakage along with the cup is well prevented, the upper end of the cup mouth is provided with a sealing ball in a matched mode, and the radius of the sealing ball is the same as that of an inner ring of the cup mouth. The sealing ball completely clamps the inner ring of the cup mouth to prevent water in the cup mouth from flowing out, the sealing ball is made of silicagel and non-toxic silica gel to guarantee use safety of a user, and the cup cover is provided with two sets of sealing devices which are symmetrical about the cup mouth, so that the device is high instructural compactness and good in sealing performance. Threads at the side end of the cup opening are connected with a threaded notch in the inner wall of the cup cover in a matched mode, so that the cup cover is attached to