Abstract: A head maintenance control method of an inkjet printer includes receiving a printing command performing a printing operation, calculating a time difference between an input time of the printing command and a final time that the printing operation of the inkjet printer has been most recently performed before the printing command is input, displaying a message requesting the maintenance operation when the time difference is greater than a predetermined time, and performing the maintenance when an execution command for performing the maintenance is input. An intensity of the maintenance operation varies in accordance with the time difference. The maintenance operation is performed in response to an actually required degree when the maintenance should be performed, thus an unnecessary maintenance operation is avoided or an incomplete maintenance operation is prevented.