The invention provides an induced polarization (IP) sweeping method with multiple power supply points realizing simultaneous power supply. According to the method, an electric transmitter is utilizedto simultaneously supply power at five power supply points at different positions, an electric receiver is utilized to obtain the potential information and the IP information of the measurement pointsat the different positions in the measurement area, resistivity data of the measurement points at the different positions are obtained through a normalization device coefficient and a resistivity calculation formula of the multiple power supply points, and IP sweeping operation of the multiple power supply points realizing simultaneous power supply is achieved. The method is advantaged in that the method helps to increase the acquisition amount of electrical information in different directions in the whole measurement area, improve electrical signal intensity, reduce isolation influence of apower source and increase the amount of geological information under the measurement points, and thereby the purpose of improving the IP sweeping effect is achieved.