A high precision two dimension angle adjustable mechanism based on a fine actuator and a slider-crank mechanism was designed to implement the fine alignment and automatic adjustment between Hartmann sensor and adaptive optical system in a 2 m diameter telescope. On the basis of the optical analysis, it points out that the mechanism needs ±1 ° adjustable amount and 6 " adjustable accuracy. Associating the use pattern of the actuator with the outline of the Hartmann sensor, main parameters of the adjustment mechanism were selected, the initial mechanism was designed and its accuracy and dynamic specialty were analyzed. Then, a detecting system for the mechanism was designed based on an autocollimator. The adjustable range and accuracy as well as the dynamic specialty were tested by the detecting system in the experiment. The results show that the adjustable angles on the pitch and azimuth directions are all about ±1.2° and the rotation angle accuracies in the pitch and azimuth directions are 0.43″ and 2.1″, respectively, which all satisfy the design requirements. The research results provide a foundation for high precision detection of Hartmann sensors.