Sand-dust weather takes place frequently in China and has been recorded for a long time. Terms for sand-dust weather phenomena have been gradually improved to be more standard. However, there are still evident conflicts among different definitions of sand-dust weather phenomena in some industry and national standards, such as “surface weather observation standard” published in 2003, “sand-dust storm weather monitoring specification (GB/T 20479—2006)” issued in 2006 and “sand dust storm weather classification (GB/T 20480—2006)”. Based on investigation and discussion, more consistent definitions of some terms for sand-dust weather have been proposed, which can provide some reference for both the application of the national standard and its improvement in the future.