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Cross tensioned concrete pavements are constituted with cement concrete slab and prestressed tendons.The prestressed tendons could provide lateral restraint of pavement,make road unit from unconfined to active confined stress state,so as to eliminate transverse joints and constricting the cracking capability of the pavement.Based on concrete fatigue damage development theory,plain concrete and cross tensioned concrete through numerical simulation are constructed,and the mechanism of improve anti fatigue strength of cross tensioned concrete pavements are researched.The result shows prestressed tendons can applying an external force to concrete slab and achieve the target which control from pavement fatigue damage development to improve pavement fatigue resistance.