Objective To elucidate the biomechanical foundation of Swan-like Memory Compressive Connector(SMC ) for treatment of humeral fracture. Methods To analyze the biomechanical stability of the fixed humeral fracture with SMC and eight holes plate by three methods: tension test bending test and torsion test. Results From three tests above,the relation of load-straining load-migration bending moment- deflection?torsion moment-torsion angle were drew, both of results show no statistical significant deviation. Conclusion Internal fixation of humeral fracture with SMC could have good biomechanical stability.