The invention relates to a mobile terminal incoming call reminding system comprising an acceleration detection device arranged on a mobile terminal and used for detecting whether the current movement trajectory of the mobile terminal is a movement trajectory satisfying a rule, if so, sending a regular movement signal, and otherwise, sending an irregular movement signal; an upper side image collection device arranged above the mobile terminal and used for collecting image data of an upper side scene of the mobile terminal to obtain and output an upper side high definition image; and a lower side image collection device arranged below the mobile terminal and used for collecting image data of a lower side scene of the mobile terminal to obtain and output a lower side high definition image. By adoption of the mobile terminal incoming call reminding system, when the user carries the mobile terminal in a pocket and knows nothing about the incoming call, an incoming call reminding operation can be effectively performed.