Lamp dimming method, device and equipment and storage medium

The invention provides a dimming method and device of a lamp, equipment and a storage medium, and relates to the technical field of illumination. The dimming method of the lamp comprises the following steps: acquiring parameters of a control signal of a dimming circuit; the parameters of the control signal comprise the period, the frequency, the chopped high-level period and the duty ratio of the control signal; obtaining an output current effective value of the switching power supply according to the period of the control signal, the chopped high-level period and hardware parameters of the dimming circuit; and in the process of dimming the brightness of the lamp from low to high, adjusting the effective value of the output current according to the frequency and/or duty ratio of the control signal so as to dim the lamp through the adjusted effective value of the output current. According to the embodiment of the invention, dimming can be realized by adjusting the frequency and duty ratio of the control signal