Liquid-filled cushion

The utility model relates to the technical field of seat cushions, in particular to a liquid-filled seat cushion which comprises a liquid filling device and a seat cushion body. Wherein a cavity is formed in the seat cushion body, a liquid filling opening is formed in the seat cushion body, and the liquid filling opening is communicated with the cavity. The liquid filling device comprises a liquid injection bag, a liquid injection opening capable of being connected with the liquid filling opening is formed in the liquid injection bag, the liquid injection opening is communicated with the interior of the liquid injection bag, at least one part of the liquid injection bag is made of soft materials, and the liquid filling bag can be filled with liquid by pressing the liquid injection bag and compressing the internal space of the liquid injection bag. And liquid in the liquid injection bag is discharged through the liquid injection opening and injected into the cushion body through the liquid filling opening, so