[Objective] In view of the sand burying problem caused by the wind and sand flow on the highway in Bashang area of Zhangjiakou City, Hebei Province, a comprehensive wind and sand fixing system of sand retaining dike sand fixing brick was established, and its wind and sand fixing effect was analyzed, in order to provide relevant technical parameters for the prevention and control of wind and sand disasters on the highway.[Methods] The flow field change around the sand retaining dike, and sand particle movement trajectory, sand-fixing brick spacing, and sand accumulation around the sand-fixing brick were numerically simulated by ANSYS software to evaluate the wind-prevention and sand-fixation effects of the integrated sand-retaining dike and sand-fixing brick system.[Results] ① A deceleration zone, an acceleration zone, a turbulence zone, and a recovery zone were formed around the sand-retaining dike as wind and sand passed through it. The sand-retaining dike with a slope ratio of 1:1.2 had the most effect on slowing wind and fixing sand. ② A discrete phase model (DPM) was used to simulate the trajectory of sand jumping on the sand-retaining dike. When the wind speed is 12~20 m/s, the sand falling point was 11~21 m away from the sand-retaining dike, and then the relative position of laying the sand-fixing brick was determined. ③ When the starting position of sand-fixing bricks was 11 m away from the sand-retaining embankment, and they were laid in 11 rows in a square form of 1 m×1 m, then the effect of fixing surface quicksand was the best.[Conclusion] The integrated sand-retaining dike and sand-fixing brick system reduced the wind speed and blocked the surface quicksand by "far-resistance and near-fixation". The sand-fixing brick barrier can effectively prevent the restart of sand particles crossing the sand retaining dike, thereby decreasing the occurrence of highway sand burial, and ensuring driving safety in wind and sand disaster areas.