The invention provides a minitype self-locking valve which comprises a valve seat, a valve element, a magnetic conductive base, a magnetic isolation ring, a magnetic conductive sleeve, a permanent magnet, a coil, a magnetic conductive gasket and a magnetic isolation gasket. The valve seat and the magnetic conductive base are buckled at the front end and the rear end of the magnetic conductive sleeve correspondingly. The valve element is arranged on the inner side of the magnetic conductive sleeve in a penetrating manner. The magnetic isolation ring is embedded at the rear end of the valve element. The coil is embedded on the outer side of the magnetic conductive sleeve. The permanent magnet is embedded on the outer side of the front end of the magnetic conductive base. The magnetic conductive gasket and the magnetic isolation gasket are embedded on the outer side of the rear end of the magnetic conductive base. The magnetic isolation gasket is arranged on the outer side of the magnetic conductive gasket. The minitype self-locking valve has the beneficial effects that the structure integrated, and the size is small. According to the minitype self-locking valve, an inserting type mechanical connector, single work magnetic path design and the parallel dual coil (or signal soil positive and negative control) are adopted, and structure miniaturization is achieved.