In order to investigate the mechanical characteristics of high strength stainless steel wire mesh in Engineering Cementitious Composites (ECC) and to determine the reasonable lap length, the pullout tests of 39 specimens were carried out by considering the influential factors such as transverse strand spacing, lap length and strand diameter. The results show that there are two failure modes in the lap connection of steel wire mesh in ECC, namely pull out and pull off. The setting of transverse strand has little effect on the ultimate pull-out force, but the slip decreases with the decrease of the transverse strand spacing. With the increase of lap length, the slip amount and “lap stiffness” to peak load increase, while the ultimate bond stress decreases. Based on the experimental analysis, the critical lap length of steel wire mesh is determined, and the calculation formula of lap length considering the correction coefficient β is established.