The invention provides an information searching method of a mobile communication terminal and a mobile communication terminal thereof. The method includes that: the terminal receives a command entered by a terminal user for searching relevant information corresponding to a preset SIM card; the relevant information of the SIM card is filtered according to the markings corresponding to the SIM card, wherein, the relevant information comprises the information including call log and/ or information record and/ or contact person information. By adopting the invention, the information of the mobilecommunication terminal provided with a plurality of SIM cards can be searched by cards, the search method is quick, accurate and convenient, thus saving the searching time for the terminal users.