This article introduces on the main content of rail welding supervision.Taking the evaluation of rail weld-ing supervision service quality as the starting point,based on the SERVQUAL model and combined with the charac-teristics and features of rail welding supervision services,an model with evaluation indicators and their weights is con-structed to evaluate rail welding supervision service quality.Taking Hohhot rail welding supervision service quality station as an example,the established evaluation model is used to evaluate the current on-site rail welding supervision service quality,and the IPA model is used to analyze the evaluation results.The advantages,disadvantages,and direc-tions for improvement of the existing service work are identified,and the shortcomings are analyzed.A service quality improvement plan is proposed to provide reference and guidance for domestic supervision service quality evaluation management.