The invention discloses a high-speed comparison method for the data contents of a database. The method comprises the following steps that: obtaining a source table and a target table of a database, and independently carrying out sorting on data in the source table and the target table; obtaining a minimum major key field A and a maximum major key field B in the source table, and obtaining a minimum major key field C and a maximum major key field D in the target table; according to the sizes of A, B, C and D, defining a plurality of intervals, and carrying out interval division on data in the source table and the target table according to the size of the major key field of each piece of data; and comparing the data in the source table and the target table in the same interval. Through the method, the difference of the data on two ends can be quickly and efficiently compared, a data consistency inspection means is intensified, and inconsistence generated in a data copying process can be regulated in time, and the method has an important practical meaning for guaranteeing the safe and stable operation of the database.