The present invention provides a demultiplex type display driving circuit, including: a plurality of drive units. Each drive unit comprises three demultiplex modules, and each demultiplex module includes two switch elements. The first switch element and the second switch element are controlled to be alternately on with the first branch control signal and the second branch control signal. The third branch control signal controls the two switch elements of the second and the third demultiplex modules to be alternately on to sequentially input the data signal to the first, the second, the third and the fourth data lines. Thus, division one to four of the data signal can be achieved with the three branch control signals. In comparison with prior art, the amount of the branch control signals is decreased, and meanwhile, the CMOS transmission gate is employed to be the switch element in the demultiplex modules.