The utility model relates to a basketball stands height regulating mechanism, including outer tube and inner tube, outside of tubes including outer tube slidable ground cover is established, the one end of outer tube is equipped with first pin joint hole and bolt, and the inner tube is provided with a plurality of second pin joint holes along the axial, and it is downthehole fixed mutually with outer tube and inner tube with one of them second pin joint that first pin joint hole is worn to locate by the bolt. Adopt the basketball stands height regulating mechanism of above -mentioned structure, through the relative position who adjusts outer tube and inner tube, make the second pin joint pore pair of the different positions of first pin joint hole and the inner tube of outer tube accurate and fixed through the bolt pin joint, can easily adjust the basket height of basketball stands, realize height -adjustable's function, customer resources sparingly, simple structure is firm moreover, is convenient for operate.