The invention discloses a visualized self-sensing detector capable of monitoring rock mass properties in real time. The visualized self-sensing detector comprises an image processing and displaying module, power sources, a signal amplifier, an illumination mechanism adjuster, a data display screen, a data processing module, a detector outer-end control handle, a detector rod body, signal transmission lines, a resistance detection module and a detector probe. The resistance detection module is arranged between the detector rod body and the detector probe and internally provided with force sensors. The resistance which a cutting edge at the end of the detector probe bears while the cutting edge moves in rock mass is measured through the force sensors. Data obtained through measurement of the force sensors are processed through the data processing module, then mechanical property parameters such as shearing strength of the rock mass are worked out, finally, a result is displayed on the data display screen, and self-sensing of the detector is achieved. By means of the visualized self-sensing detector capable of monitoring the rock mass properties in real time, through a water-proof microscopic lens, the signal amplifier and the image processing and displaying module, images shot by the water-proof microscopic lens can be amplified and displayed in real time, and visualization is achieved.