As an important part of accessible facilities,the basic requirements for wheelchair ramps are clear in the building design code.When engineers face specific projects,especially in outdoor weather,vegetation,municipal and other different environments,they need to make adjustments on the basis of not violating norms to achieve the function of the facility,rather than simply applying relevant standards.In this paper,the problems related to the design of wheelchair ramp are analyzed,and the concrete design methods of accessible facilities in outdoor environment are put forward,which can be used as reference for designers.