Towards discretetime systems with model uncertainty and external disturbancean indirect adaptive fuzzy sliding mode control scheme was developed.Firstlya discretetime exponential reaching law was used to obtain the ideal sliding mode control law.Thentwo fuzzy systems and a third one were used to approximate unknown functions of the system and the switchtype control in the ideal control law respectivelywherein the consequent parameters were adjusted by an online adaptation law with parameter projection.It is proved that the proposed scheme can guarantee that the signals in the closeloop system are bounded and the tracking error may converge to a small neighborhood of the origin.Simulations results showed the effectiveness of the algorithm and the alleviation of the chattering phenomena.