The invention discloses an automobile voltage-stabilized starting power supply, comprises a housing, a charging line positive electrode, a charging line negative electrode, a charging indicator lamp,a power supply indicator lamp, an overcurrent and overvoltage indicator lamp, a display screen, a startup switch, a USB interface, a charging interface, a transmission line, a solar panel, a control panel, a charging cell, a charging control module, a microprocessor, an overcharge and overdischarge protection module, a discharge control module and a display device. The invention has the advantagesthat: the design of the power supply for the voltage-stabilized starting of the automobile is reasonable, the output port of the charging control module is connected with the battery cell through a transmission line, the input port of the charging control module is connected with the charging interface through a transmission line, and the charging control module is connected with the solar cell panel through a transmission line, when the battery cell is short of power, the battery cell can be inserted into the alternating current through a charging interface, the current fills the battery cell through the charging control module, and when there is no alternating current, the solar cell panel supplies power to the battery cell.