Abstract: To better understand and quantify the collaborations in metrological research areas, co-authorship is studied as an important entry point to analyze the development of scientific research in this field.17, 777 literatures related to meteorological observation from 1973 to 2019 are selected as the research object.By the use of the complex network method, a co-authorship network is constructed to reflect the collaboration of scientists in this field.The analysis results of the modular characteristics and the topological structure of the network show that most scientists in the field of meteorological observation collaborate as scientific research teams, but this kind of cooperative relationship focuses on internal team cooperation, with less cooperation between different teams.The cooperation mechanism mainly includes completely preferred rule and random-preferred hybrid rule, with the latter more pronounced.And the size of the research team is an influencing factor for the cooperation.The larger the team size, the higher the cooperation degree.