The present invention relates to a lock device, comprising a housing including a lock hook mounted in the housing, the lock hook pivotally moves to and away from a lock hook locked position; a locking slider for locking the lock hook, the locking slider having a locking slider first end which abuts against an axial surface of the lock hook, the locking slider is reciprocatingly slideable in a first direction parallel to the lock hook pivoting plane following pivoting of the lock hook to move to or away from a locking slider locked position; a slider locking device for locking the locking slider, the slider locking device is reciprocating slideable in a second direction following the reciprocatingly sliding of the locking slider in the first direction, the second direction crosses the lock hook pivoting plane. The present invention further relates to an apparatus mounted with said lock device.