The shape recovery effect and connecting behaviors of the pipe-joint made of an Fe-17Mn-5Si-10Cr-5Ni alloy were investigated. The maximal recovery strain appears when pre-strain is about 5%. When pre-strain is about 6%, the coupling of pipe-joint shows higher fastening stress. The SME and fastening stress for coupling can be improved remarkably with thermal-mechanical training. The recovery strain reduces with increasing wall thickness of the pipe-joint. With a suitable size of wall thickness the fastening stress for coupling is higher. The fastening stress reduces with increasing length of coupling. Through experiment and analysis, technical and structural parameters for designing FeMnSi pipe-joint are provided.