Snap fastener

The utility model discloses a snap fastener. The fixing device comprises a fixing piece and a panel mounted at the top of the fixing piece, a boss is arranged at the bottom of the panel; a limiting ring is arranged at the bottom of the boss; a limiting device is arranged on the top face of the fixing piece, and the distance between the bottom of a limiting part of the limiting device and the top face of the fixing piece is larger than the distance between the upper end of the limiting ring and the top face of the fixing piece, so that when the panel is installed at the top of the fixing piece,the limiting ring is located below the limiting device to limit upward movement of the limiting ring. The face piece can be replaced under the condition that the fixing piece is not detached from thefabric, the replaced face piece can be repeatedly used to save cost, different face piece combinations can be achieved on the same fixing piece, personalized customization can be met, the structure is simple, and disassembly