The invention discloses a novel sheet tension-shear two-way loading test system and belongs to the field of material mechanical testing machines. The system comprises a test sample plate and a tester. The tester comprises a test table. The test table is provided with a clamping mechanism. The test sample plate comprises an upper positioning part, a lower positioning part and a deformation zone. The clamping mechanism comprises an upper restraint device, a lower restraint device, upper positioning plates and lower positioning plates. The two upper positioning plates and the two lower positioning plates are respectively used for clamping the upper positioning part and the lower positioning part. The lower restraint device comprises a first installation block and a first connection rod fixed to the first installation block. The tail end of the first connection rod is provided with a first driving mechanism. The upper restraint device comprises a fixing block, a first sliding block and a second installation block fixedly connected to the fixing block and the upper positioning plates. The upper restraint device is provided with an additional frame. One side of the additional frame is connected to a second driving mechanism for providing a shearing force. The system reduces wrinkling of the sheet material and prevents interference of tension and shear.