A portable composite apparatus and a method of controlling photographing modes. The portable composite apparatus includes a decision unit to decide whether current time information is included in a time range corresponding to a current photographing mode by referring to a prestored time information table, and an operation control unit to change priority levels of photographing modes based on the decision result from the decision unit and the time information table. As photographing modes of the portable composite apparatus are prioritized differently based on the current time information and the time information table, user convenience and expedition of operating (or setting) a desired photographing mode can be enhanced.