The invention discloses a printing ink barrel with a lock catch. The printing ink barrel with the lock catch comprises a barrel body, a barrel cover and a barrel hoop. The barrel cover is arranged onthe barrel body. The barrel hoop is arranged at a joint of the barrel cover and the barrel body in a hooped manner. The barrel hoop is mainly composed of a barrel hoop ring with a notch, a connectingpiece and a spanner hasp body, wherein one end of the spanner hasp body is in hinge connection with one end of the notch of the barrel hoop ring, one end of the connecting piece is in hinge connectionwith the other end of the notch of the barrel hoop ring, the other end of the connecting piece is in hinge connection with the spanner hasp body, the spanner hasp body is provided with a lock hole, the barrel hoop ring is provided with a lock ring coordinating with the lock hole, when the spanner hasp body is pulled together, the lock hole and the lock ring form an interconnected lock channel, and the lock channel is internally provided with the lock catch. According to the printing ink barrel with the lock catch, the lock catch can fix the spanner hasp body to the barrel hoop ring, the situation that when an original spanner hasp body is disturbed by external force or is used for a long time, under the relatively large hooping action, automatic disengaging is caused is avoided, the locking safety performance of the barrel hoop can be effectively improved.