Head-mounted computer mouse

A head-mounted computer mouse for controlling a cursor on a display of a host device, comprising:

• a hollow headpiece comprising a support portion mounted therein;
• a fixing member configured for mounting the headpiece on a user to prevent the headpiece from moving relative to the head of the user;
• a holding member mounted within the headpiece, and comprising:
• a holding portion being worn on the head of the user;
• and
• a sliding portion connected to the holding portion and slidable relative to the support portion;
• and
• a processing unit comprising:
• a displacement detecting module configured for detecting a movement of the sliding portion relative to the support portion, to determine a coordinate offset value of the sliding portion;
• and
• a communicating module configured for sending the coordinate offset value of the sliding portion to the host device, wherein the cursor on the display is controlled to move based on the coordinate offset value of the sliding portion.