The invention discloses an error-detecting method for a Chinese article, handling a Chinese sentence including a first erroneous Chinese character string in a first location. The method includes subdividing the first erroneous Chinese character string into a plurality of first subgroups, wherein each of the first subgroups consists of two consecutive and non-consecutive Chinese characters out of the first erroneous Chinese character string. The method further includes providing a database containing a plurality of first correct Chinese character strings and a plurality of corresponding first correct indices, wherein the first correct indices consist of two consecutive and non-consecutive Chinese characters out of the first correct Chinese character strings. The method further includes acquiring one of the first correct indices according to the first subgroup, and one of the first correct Chinese character strings according to the acquired first correct index. The method further includes generating a best candidate sentence according to the acquired first correct Chinese character string, and showing the Chinese sentence and the best candidate sentence on a display device.