Abstract: A series of temperature-controlled triaxial experiments were conducted.The study of thermal effects on the mechanical behaviour of reconstituted unsaturated bentonite clay was presented.Governing temperatures were 15℃,30℃,45 ℃ and 60℃.Thermal effects on shear strength and Young’s tangent modulus were discussed.The research results showed that specimens with higher temperatures showed higher shear strengths and Young’s tangent modulus.The formulas of shear strength and Young’s tangent modulus taking account of temperature were proposed.