The utility model discloses a strike force transducer for control rod, cushion atress board, buffering formula connecting seat and shear the formula elastomer eight convex beam type pure shears sections along the ring that the circumference evenly was formed by connecting including the ring, ring buffering atress board with buffering formula connecting seat sets up respectively the both ends of formula elastomer are cuted to the ring, the lateral wall that the formula elastomer was cuted to the ring is provided with the foil gage that the multi-disc has the lead wire, be provided with on the buffering formula connecting seat and be used for the parcel the rubber seal core of lead wire. The utility model discloses a sensor structure replaces the clamp ring structure between control rod and the buffer structure, universe nature stress and strain field that can precision measurement buffer structure atress spare clamp ring, can precision measurement buffer structure atress spare clamp ring at the fall actual value of stick impact force that receives when ending of control rod, can normally work in the aquatic that has certain pressure, flow, be the impact force transducer that waterproof nature is fabulous.