The invention relates to a tower crane control system. The control system comprises an inverting circuit for driving a motor to rotate, a control board for receiving an operating instruction signal and a peripheral feedback signal and controlling the inverting circuit, a direct current (DC) bus circuit for supplying power to the inverting circuit, and a power supply circuit for converting electric energy in a DC bus into low-voltage DC, wherein, input terminals of the inverting circuit and the power supply circuit are respectively connected to the DC bus circuit. The invention further discloses a tower crane using the control system. The tower crane control system has the advantages that the DC bus circuit supplies power to the power supply circuit so as to realize power supply for low-voltage elements in the control system, thus saving energy consumption.