A novel combined ground sensor intelligent monitoring network node was designed, which consisted of a novel pyroelectric infrared sensor, a microwave induction displacement module and a micro serial port camera. The infrared sensor and the microwave sensor were respectively used for detecting the horizontal and vertical moving targets, and the pulse signals outputted by the two modules were used to trigger the serial camera to capture the target image for the purpose of avoiding continuous operation of the camera with large power consumption. In addition, the microwave sensor used pulsed power supply to further reduce power consumption of the node. The experimental result shows that the target detection distance of the infrared sensor and the microwave sensor are both more than 40m, which matches the working distance of the large focal length lens serial port camera with infrared-fill-light and image compression function. Thus, the goal of designing a ground sensor node, which is small in size, low in power consumption, cost-effective, high in integration and suitable for unattended function in the wilderness or indoors, is realized.