The invention provides an in-plane tensioning, sharing and bending loading device for super-elastic soft plates and aims to conveniently and simply realize tensioning, shearing and bending and combined loading thereof of super-elastic soft plate specimens through displacement changes. The device mainly comprises an upper self-locking clamp module, a shearing loading device module, a tensile loading device module, a bending loading device module, a lower self-locking clamp module and the like. When the device is in operation, loaded specimens are fixed through frictional self locking, same loading can be simultaneously performed on two different super-elastic soft plates or same super-elastic soft plates with different defects to realize comparative study, and accordingly operation efficiency is improved, and experiment cost and time are saved. In addition, due to modification of traditional point loading into face loading, unnecessary influences on experimental results due to stress concentration of local clamping portions in point type clamping are avoided, and the experimental results are more accurate.