Seal liquid cover

The invention relates to the technical field of package, in particular to a seal cover. A seal liquid cover comprises a cover body and an outer cover. The cover body comprises an upper cover body partand a lower cover body part. An annular ball bead frame is arranged in the upper cover body part, and the lower portion of the annular ball bead frame is provided with an upper limiting ring and a lower limiting support. A ball bead is arranged between the upper limiting ring and the lower limiting support and seals the bottom of the annular ball bead frame. The inner wall of the lower portion ofthe annular ball bead frame is provided with at least one liquid inlet channel. An elastic reset mechanism is arranged in the cover body. A piston rod of the elastic reset mechanism is located belowthe ball bead. When the elastic reset mechanism is in a reset state, the piston rod jacks the upper ball bead, and the ball bead stops the liquid inlet channel. A circle of containing groove is excavated in the lower cover body