提出了一种用于绘制大气腐蚀图的环境因素数据采集方法，以减少环境因素数据采集的工作量，并提高大气腐蚀图的准确度。该方法从中国天气网、全国城市空气质量实时发布平台等开放网站获取环境因素数据，克服了数据获取渠道有限的问题，并通过矩阵优化方法，确定了环境因素数据收集最优时刻点组合。结果表明：环境因素数据收集最优时刻点组合为3，9，10，13，16，19，23点，该最优组合保证了统计的高精确度，其相对误差缩小到2.33%，同时工作量仅为原来的1/3。

A data collection method of environmental factors for drawing an atmospheric corrosion map was proposed to reduce the workload of data collection and improve the accuracy of atmospheric corrosion map. This method gathered environmental factor data from open websites such as the China Weather Network and the National Urban Air Quality Real-time Distribution Platform, overcoming the problem of limited access to data. And then the optimal time-point combination for gathering environmental factor data was achieved through matrix optimization method. The results show that the optimal time-point combination for gathering environmental factor data was 3, 9, 10, 13, 16, 19, 23 o'clock, which guaranteed a high accuracy with the relative error reduced to about 2.33% and the workload was only 1/3 of the original.