The invention relates to an elevator decoration suspended ceiling capable of preventing ceiling core fall. The elevator decoration suspended ceiling comprises a suspended ceiling framework, the suspended ceiling framework is composed of a front top groove frame body, a left top groove frame body, a back top groove frame body and a right top groove frame body, which are fixedly connected with each other at heads and tails in sequence, a front ceiling core and a back ceiling core are sequentially installed in the suspended ceiling framework along the length direction of the left top groove frame body, an air guide groove body is installed between the front ceiling core and the back ceiling core, both ends of the air guide groove body are respectively fixed on the left top groove frame body and the right top groove frame body, the back ceiling core is fixed between the left top groove frame body and the right top groove frame body by bolts, and a ceiling core locking mechanism is arranged on the front ceiling core. According to the elevator decoration suspended ceiling provided by the invention, a key is controlled to rotate to drive a disk to rotate so as to drive a first lock rod and a second lock rod to carry out telescopic movement along the length direction of a fixing plate, the first lock rod and the second lock rod are respectively inserted in a first slotted hole and a second slotted hole to lock the ceiling cores so as to realize the anti-fall function of the ceiling cores, and the situation that the ceiling cores fall in the case of elevator cab vibration or other cases to accidentally injure the passengers can be prevented.