It is very important to develop computerized surface meteorological data examination technology for improving data quality and data processing efficiency.The ordination analysis technique of cloud records is one of key difficulties in surface meteorological observation data examination.A classification analysis method is introduced,which divides the cloud records into several types according to various collocations of total cloudiness,low cloudiness,and clouds forms,and for each type,the analysis is made respectively according to various circumstances.In the analysis,the cloud symbols of 29 types are projected into the two-word(32 bits) variables,which makes the analyzing procedure simple and clear.As a test,the software has been applied in the artificial examination of surface meteorological observational data in Zhejiang Province.It has been proven that this method is very useful in improving the cloud observation data examination quality.