The invention relates to a remote control-based intelligent fertilizer applying system which comprises a field control terminal, an information management center and a remote monitoring terminal. The field control terminal is based on an automatic fertilizer applying device with a single chip microcomputer, additionally provided with a wireless module and a sensor, the information management center consists of a server, database and the wireless module, and the remote monitoring terminal consists of a user's mobile phone and a personal computer. By combining the intelligent fertilizer applying technology and the remote network control technology, the system realizes timing, quantitive and precise control on fertilizer applying, reduces workload of a user, and improves fertilizer and waterutilization rate of crops.