Based on the analysis of the current technical situation at home and abroad, the overall structure, technical parameters and finite element analysis results of the 13 5/8-10M collet-type subsea hydraulic connector developed by Baoji Oilfield Machinery Co., Ltd. are described in detail, and the manufacture and test of the prototype are introduced. The structural characteristics of the collet-type subsea hydraulic connector are summarized. The collet-type subsea hydraulic connector has the functions of hydraulic locking and multiple unlocking, position indication, profile self-locking, gasket ring retention and replacement, etc. The product passes the dual certifications of DNV and CCS, obtains the API 17D certificate, and carries out the on-site System Integration Test (SIT) with user equipments, which effectively promotes the localization of key components of subsea oil and gas equipments.