The invention discloses a loading machine mechanism with an anti-lock device, wherein a rack is hinged with one end of a movable arm, the other end of the movable arm is hinged with a bucket, the end part of a cylinder sleeve of a movable arm hydraulic cylinder is hinged with the rack, the end part of a piston rod of the movable arm hydraulic cylinder is hinged with the middle part of a bearing rod, one end of the bearing rod is hinged with the rack, the other end thereof is hinged with one end of a movable arm connecting rod, the other end of the movable arm connecting rod is hinged with two sides of the movable arm, the end part of a cylinder sleeve of a pair of bucket hydraulic cylinders is hinged with the rack, the end part of the piston rod of the pair of bucket hydraulic cylinders is hinged with one end of a rocking arm, the middle part of a pair of rocking arms is hinged with that of the movable arm, the other end of the pair of rocking arms is hinged with one end of a bucket connecting rod, and the other end of the bucket connecting rod is hinged with a part of the bucket. The loading machine mechanism with the anti-lock device has the advantages of energy consumption reduction, capability of preventing the movable arm from being dead locked during the lifting process, and the like.