User safety is an important factor for designers to consider when designing led high bay . Designers shall provide a safe LED Lighting environment for users, and it requires an adequate and professional understanding of functional area allocation and architecture knowhow. Satisfying users’ demand for LED Lights on the basis of respecting the original structure of building and allocating the functional areas appropriately is the representation of humanized design.For any type of lamp s, the group of users may include elder people, women, and children, healthy and disabled. For different types of users, there shall be different focus for design and the different demand for light fixtures shall be satisfied respectively. Only by caring people and human nature can designers move people with their humanized design.