[Objective] To obtain the best sand-fixing measures along the Geku railway in order to provide a theoretical basis for the deployment of sand-fixing measures along the line.[Methods] The ANSYS fluent numerical simulation was used to study the change of flow field, the protective distance, the sand accumulation process of high density polyethylene (HDPE) board and the hardened sand square grid.[Results] The results showed that when the airflow passed through the HDPE board and hardened sand square grid, six velocity zones were formed including:low air speed zone at windward side, air flow uplift zone, air flow accelerated zone, the first air flow deceleration zone, the second air flow deceleration zone and air flow speed recovery area zone. At the same height, the effective protection distance of hardened sand square grid was greater than that of HDPE board under the same wind speed. The sand accumulation in the HDPE board and hardened sand square grid were dynamic processes. Sand control form of ventilated HDPE board and non-ventilated hardened sand square grid were dominated by sand accumulation and sand resistance.[Conclusion] The economical practicality and the sand control effect of HDPE board were better.