Provided is a door lock apparatus (100) which is adopted in an electronic product to lock or release a door of the door lock apparatus (100). The door lock apparatus (100) includes a rocker (110), a rocker supporting member (120), a door lock main body (130) and a locking unit (140). The rocker (110) rotates when the hook (10) of the door enters or withdraws from the door lock apparatus (100), to be coupled with or separated away from the hook (10). A rocker hinge rod (116) and a position fixing rod (117) positioned in parallel to the rocker hinge rod (116) are integrated into the rocker (110). The rocker supporting member (120) is hinge-coupled with the rocker hinge rod (116) to rotatably support the rocker (110), reciprocatingly moves in a direction in which the hook (10) enters or withdraws when the rocker (110) is rotated, and receives an elastic force from a first elastic member (151) in the direction in which the hook (10) enters. The door lock main body (130) supports the reciprocating movement of the rocker supporting member (120), and includes position fixing holes (132) to guide movement of the rocker (110) while being coupled with the position fixing rod (117) when the rocker (110) rotates and to fix the rocker (110) while the rocker (110) is coupled with or separated from the hook (10). The locking unit locks the rocker (110) while the rocker (110) is coupled with the hook (10). Accordingly, the door lock apparatus (100) has a simple, compact structure, which has fewer failures, ensures convenience in maintenance and repair and reduces the number of assembly steps.