The invention discloses an electrical impedance scanning detection system for the withdrawal of real-time multi-information and the method thereof, wherein, the system comprises a PC machine, a data transmission interface module, a microprocessor, a control module, a data acquisition module, a preceding stage detection module, an excitation source and an exciting electrode; wherein, a detecting electrode array withdrawals a detection signal and sends the detection signal to the preceding stage detection module, the detection signal is sent to an A/D converter and a data buffer memory module corresponding to a data acquisition unit after passing through a current and voltage conversion module through a multiple way switch; the date buffer memory module enters into the microprocessor; the PC machine performs the data transmission, delivers a control command or revives date through the transmission interface module and a microprocessor module; a software with supporting data analysis, curve description, image display and information prompt is arranged in the PC machine; thereby obtaining the real-time electrical impedance information of a measured target body, the multiple frequency impedance information and the impedance property. The invention has the advantages that the detection accuracy is high, the processing speed is rapid, and the noise resistance ability is strong.