The invention provides a uniform-light lamp comprising a control module, a setting module, a storage module, a mode switching module, a regulating module, a driving module and a measuring module. The uniform-light lamp is characterized in that the measuring module is used for measuring each parameter under the condition of current output brightness; and the regulating module is used for receiving each parameter from the setting module and regulating output power of the uniform-light lamp. According to the uniform-light lamp, brightness is self-adaptively regulated according to outdoor brightness, and brightness can be outputted according to the mode of user habits on the basis of user preferences due to the fact that everyone has different sensitivity to light rays.