The invention discloses a meteorological disaster automatic monitoring and early warning system and relates to the technical field of meteorological early warning. The system comprises a front end collection unit composed of an atmosphere pressure sensor, a radiation sensor, an illumination sensor, a soil water content sensor, an atmosphere humiture sensor, a wind velocity indicator, an anemoscope, a rain and snow sensor, a rainfall sensor, a soil temperature sensor, a fixed declinator and a GPS position indicator, an intermediate transmission unit and a network platform. The front end collection unit is connected with the intermediate transmission unit. The intermediate transmission unit is connected with the network platform. The front end collection unit is capable of realizing field monitored data automatic collection and active sending and is compatible with various kinds of sensors, and automatic monitoring stations distributed in different areas are respectively connected with the network platform through a wireless communication network. The meteorological disaster automatic monitoring and early warning system is convenient to operate, the monitored data is real and stable, the processing and analysis are high in speed, the field information can be grasped anytime and anywhere, reuse is available, the manpower cost is saved, and the compatibility is good.