This technical report collects and analyzes domestic and foreign stretcher elevator standards, as well as conducts research on human body height dimensions and first aid stretcher dimensions in my country, and derives a first aid stretcher size model that meets actual needs, which serves as the basis for research on elevators that can accommodate stretchers. On this basis, simulation tests and analyzes were conducted on spaces such as waiting halls and elevator cars to obtain the minimum car size data that can accommodate the entry and exit of first-aid stretchers. Suggestions were also given for the modification of existing elevators to accommodate first-aid stretchers.