The application discloses an integrated multi-sensor environment monitoring device, which comprises a sensor shell, a sensor bottom plate arranged in the sensor shell, a first combined sensor arranged at the top end of the sensor shell, a second combined sensor arranged at the bottom end of the sensor shell, a third combined sensor arranged in the bottom end of the sensor shell, and the first combined sensor, the second combined sensor and the third combined sensor are electrically connected with the sensor bottom plate; at least one supporting column is arranged at the bottom end of the sensor shell, and the end of the supporting column away from the sensor shell is connected with a host shell; the host shell is provided with a sensor mainboard, and the sensor bottom plate is electrically connected with the sensor mainboard; by using the above method, the application integrates multiple sensors, can monitor multiple environmental factors, improves different application scenarios and functions of the product, and can match different sensors according to the application scenarios, is more flexible to use, is more convenient to assemble, has a compact structure and is lower in cost.