The invention discloses a multifunctional intelligent lock catch for a child safety seat. The multifunctional intelligent lock catch comprises a lock catch body which comprises a sound cavity. The sound cavity is internally provided with a wireless sound system. Two safety belt blocking pieces are arranged on the reverse side of the sound cavity. Safety belt guide grooves are jointly formed between the safety belt blocking pieces and the back of the sound cavity. A rotatable safety belt locking block installed at the back of the sound cavity is arranged in the middle of the two safety belt guide grooves. A rotating space for allowing the safety belt locking block to rotate is arranged between the safety belt blocking pieces. The multifunctional intelligent lock catch for the child safety seat has the beneficial effects that a shoulder belt of a five point type safety belt can be fixed in front of a chest of a child through the lock catch, the shoulder belt is not disengaged from shoulders of the infant, and thus the safety performance is improved; meanwhile, a micro loudspeaker and a rechargeable battery are installed in the safety lock catch and can be connected with APPs special for a mobile phone through Bluetooth chips, and a large quantity of content of songs, music, stories and the like can be provided for children of different age and gender through the APPs, so that babies are no longer bored during taking a car.