The utility model discloses an underwater base plate guide pile connector. The underwater base plate guide pile connector is characterized in that the underwater base plate guide pile connector mainly comprises a sleeve type base, a core shaft, a bearing sleeve, clamping pin locking blocks and a spring; a central hole communicated with the sleeve type base is formed on the core shaft to be used for being fixedly connected with one end of a guide rope; more than two through holes are formed on the cylinder wall of the sleeve type base; the clamping pin locking blocks are arranged in all the through holes; the bearing sleeve is sleeved on the periphery of the sleeve type base; the inner wall surface of the bearing sleeve presses the clamping pin locking blocks, so as to enable the clamping pin locking blocks to inward extend out along the through holes of the sleeve type base and lock a guide pile; the spring is arranged between the end surface of the bearing sleeve and the end surface of the sleeve type base; and an annular groove is formed on the inner surface of the bearing sleeve. As the structure is adopted, the connector can freely separate the guide rope from the guide pile, solves the problem that the guide pile and the guide rope are required to be integrally recycled, greatly improves the operating efficiency, and also has the characteristics of compact structure and convenience in operation.