The invention relates to a sensing circuit of capacitance type touch panel, comprising a first switch, a second switch, a third switch, a feedback capacitor, a fourth switch and a computing amplifier; the first switch is provided with a first end to be connected to a receiving electrode of the capacitance type touch panel; the second switch is provided with a first end to be connected to the receiving electrode of the capacitance type touch panel; the third switch is provided with a first end to be connected to a second end of the first switch; the feedback capacitor is provided with a first end to be connected to a second end of the first switch; the fourth switch is provided with a first end to be connected to a second end of the feedback capacitor; the computing amplifier is provided with a positive input end to be connected to a grounding end, a negative input end to be connected to the first end of the fourth switch, and an output end to be connected to the second ends of the second switch, the third switch and the fourth switch, driving signals can be used for controlling the act sequence of the above switches in driving period, so that the computing amplifier can generate output voltage. The invention can cause SNR to increase, and vastly improve sensing capability of touch panel.