The invention discloses an energy-saving lamp circuit, comprising a rectifier module, an LED lamp bank and a control module, wherein the input of the rectifier module is connected with an electric supply; the control module is composed of a DSP and also connected with an LED adjustment module; the rectifier module comprises a transformer; two input terminals of the transformer respectively are a phase line input terminal and a null line input terminal; two output terminals of the transformer respectively are a first alternating current terminal and a second alternating current terminal; and the first alternating current terminal and the second alternating current terminal output alternating current power sources. The energy-saving lamp circuit adopts full digital control, and is high in control precision, small in static power, simple to install and convenient to maintain.