A method of providing a context-aware printing service includes storing schedule information of a user; storing contents related with the schedule; identifying a location of a mobile terminal of the user and a current time; determining whether the identified location and the identified time are consistent with the schedule information; transmitting a guide message to print out the contents to the mobile terminal if the identified location and the identified time are consistent with the schedule information; sending, by the mobile terminal, a printing request to an image forming apparatus; and printing out the contents.