Physiological signal monitoring device and sensor support thereof

A stent is provided that carries a sensor to monitor a physiological signal of an analyte in a biological fluid, where the sensor has a signal detection terminal and a signal output terminal. Whereinthe support comprises an implantation hole, a containing groove, a fixing groove, a waterproof sealing piece, a transverse separation elastic piece and a blocking piece, and the implantation hole is an implantation channel used for implanting the sensor and contains one part of the sensor; the accommodating groove is used for accommodating the signal output end of the sensor; the fixing groove isused for fixing the sensor and is communicated with the accommodating groove; the waterproof sealing piece is arranged above the implantation hole; wherein the transverse separation elastic piece is arranged in the implantation hole so as to separate the implantation hole and fully cover the sectional area of the implantation hole, and the separation piece is arranged between the implantation holeand the fixing groove so a