The utility model relates to a spring catch for locking, comprising a plug pin and a spring coil. The plug pin is a cylinder, and one end of the cylinder is provided with a square end. The two sides of the square end are separately provided with a counter bore. The spring coil is in a round shape, and the middle is disconnected. The material of the spring coil is spring steel. When installation, the spring coil is pulled up, and the plug pin is inserted into the installation hole of the part to be locked. And then, the spring coil is pulled down, and the plug pin can be fixed. The locking part can be locked reliably. The spring catch has the advantages that the fabrication is simple, the assembly and the disassembly are convenient and the use is reliable, and the spring catch for locking can satisfy the CE certification requirements.