Objective:To study the reliability modeling method of rehabilitation diagnosis and treatment equipment based on non-homogeneous Poisson process,and to improve the reliability analysis effect of rehabilitation diagnosis and treatment equipment.Methods:Statistics and analysis of the total running time of rehabilitation diagnosis and treatment equipment in a specific period of time were performed,and the trend test of its operation data was conducted.The bathtub curve was used as the trend of rehabilitation diagnosis and treatment equipment failure,under the condition of bathtub curve change trend,a reliability model of non-homogeneous Poisson process of rehabilitation diagnosis and treatment equipment was established.The least squares estimation method was used to estimate the non-homogeneous Poisson process reliability model parameters of rehabilitation diagnosis and treatment equipment,determine the reliability index of rehabilitation diagnosis and treatment equipment,and complete the reliability modeling of rehabilitation diagnosis and treatment equipment.A total of 17 rehabilitation diagnosis and treatment equipment in clinical use in the Second Medical Center of PLA General Hospital from April to October 2022 were selected,including 6 pulse short-wave therapy instruments,5 interference electrical therapy instruments,3 swallowing disorder treatment instruments,and 3 air wave pressure therapy instruments.In July 2022,the reliability modeling method of rehabilitation diagnosis and treatment equipment based on non-homogeneous Poisson process was applied to the management of rehabilitation diagnosis and treatment equipment.The failure rate of rehabilitation diagnosis and treatment equipment before and after the application of the reliability modeling method based on non-homogeneous Poisson process was compared.Results:The average failure rate of 17 rehabilitation diagnosis and treatment equipment was 64.71%(11/17)before application and decreased to 23.53%(4/17)after application,of which the failure rate of 6 pulse shortwave therapy devices decreased from 66.7%(4/6)before application to 16.7%(1/6),the failure rate of 5 interference electrotherapy devices decreased from 60.0%(3/5)before application to 20.0%(1/5),and the failure rate of 3 dysphagia treatment instruments decreased from 66.7%(2/3)to 33.3%before application(1/3),the failure rate of the 3 air wave pressure therapy devices decreased from 66.7%(2/3)before application to 33.3%(1/3).Conclusion:The reliability modeling method for rehabilitation diagnosis and treatment equipment based on non-homogeneous Poisson process can accurately calculate the failure intensity function and cumulative failure intensity function of rehabilitation diagnosis and treatment equipment,reduce the failure rate of rehabilitation diagnosis and treatment equipment,and improve the quality of use of rehabilitation diagnosis and treatment equipment.