The downhole monitoring system，integrated into the conventional electric control downhole flow control valve for intelligent wells in China，cannot monitor the two key parameters，namely the flow rate and water cut. Moreover，once the driving mechanism fails，the transmission screw automatically locks the sliding sleeve at the current position，making it impossible to close or fully open the sliding sleeve in a timely manner and resulting in the inability to regulate the production of the target layer or branch. In this research，a unique sliding sleeve mechanical structure with an integrated downhole parameter measurement system was designed using the selected sensors of pressure ，temperature and water-cut，flow meter，and downhole sliding sleeve displacement sensor，to solve the incapabilities of existing electrical-control downhole flow control valves in China to monitor fluid flow and water cut. A unique mechanical transmission system was designed using the scalable coupling to serve as the driving mechanism for the concentric sliding sleeve. The designed sliding sleeve integrates a force-open force-close mechanical structure，which can be moved to the fully open or fully closed position by the sliding sleeve switch tool. This eliminates the shortcomings of the mechanical structure of conventional electric control downhole flow control valves in China and provides key support for the development of the intelligent well technology in China.