In order to provide the basic data of shipping security, marine production safety and military activities of Guangdong，Guangdong Provincial Meteorological Bureau takes the lead in the research and development of the ship automatic weather data acquisition system. Through application of the technology of STC MCU,digital conversion, timer interrupt and serial communication, the function modules such as signal acquisition, data quality control, Beidou communication configuration and remote parameter modification are constructed, the system realizes the realtime collection of temperature, relative humidity, wind direction, wind speed, air pressure and other metadata, uploads data through the Beidou terminal and corrects error running parameters remotely. And comparing with the observation data of the oil automatic platform, it validates the accuracy of the system data acquisition. The actual result indicates that the ship automatic weather data acquisition system is of high precision,stable and reliable, and meets the needs of meteorological services betterly.