Corrosion，fatigue and impact often occured simultaneously during the service of joints which play a vital role in engineering structures.It was essential to study the mechanical behavior of joints under their combined effect.This paper investigated the tensile behavior of metal-composite bolted joints under the combined condition of corrosion，fatigue and impact by experimental and simulation methods.The research results show that the simulation results are in good agreement with the experimental results，which proves the effectiveness and accuracy of the simulation model in predicting the mechanical behavior of the connection under the combined action of corrosion，fatigue and impact.The combined effect of corrosion，fatigue and impact significantly reduces the tensile strength of the bolted joints.The peak value of the load-displacement curve of bolted joint becomes lower with the extension of the salt spray corrosion time.