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本文针对自动扶梯维护保养和定期检验工作中无法根据空载下行制停距离判断有载下行制停距离是否符合要求的问题，通过分析制停过程中制动力与制动距离的关系，推理出空载和有载工况下行制停距离之间的关系，并据此计算出能够覆盖有载下行制停距离范围要求的空载下行制停距离范围。此范围在有载工况下依然具有约束效用，相比国标中规定的空载下行制停距离范围更具参考意义。通过实例计算验证了此范围在实际中应用的可行性。“,”It’s unable to determine whether on-load downward stopping distance meet the requirements when only no-load downward stopping distance is measured in the escalator maintenance and periodic inspection. This paper analyzes the relationship between braking force and stopping distance and infers the relationship of downward stopping distance between the no-load and on-load conditions. The no-load downward stopping distance range which can cover the range of on-load downward stopping distance is calculated. The calculated range has more reference value than the range of the national standard. The feasibility is veriifed by an instance.