Spring probe

The utility model discloses a spring probe comprising a cavity, an ejector pin and an outer spring, wherein one end of the metal rod of the ejector pin is sheathed and fixed on one end of the cavity, the other end of the metal rod is connected with a probe head, the part, arranged outside the cavity, of the metal rod is sheathed with the outer spring, the two ends of the outer spring are respectively welded on the end heads of the probe head and the cavity, so that the cavity and the ejector pin are connected into a whole. The spring probe can work stably and reliably and can be used for solving the problems of unstable elasticity of an inner spring and poor electrical contact of the spring probe caused by pollution, oxidization and other reasons.