Write-in checking method and device

The invention provides a write-in checking method and device, and the method comprises the steps of: determining a to-be-written-in position of a current input field; judging a write-in state of the current input field and a write-in state of the to-be-written-in position; if both the write-in state of the current input field and the write-in state of the to-be-written-in position are normal, writing preprocessed to-be-written-in data to obtain actual written-in data; if the write-in state of the current input field and/or the write-in state of the to-be-written-in position are/is abnormal, limiting write-in operation; comparing the actual written-in data with the preprocessed to-be-written-in data; and if the actual written-in data is not consistent with the preprocessed to-be-written-indata, emptying the current input field, and rewriting the preprocessed to-be-written-in data. According to the write-in checking method and device, the write-in state of the input field is checked inreal time, the input inval