The invention discloses an intelligent calling system for liquid crystal display, which comprises an LED screen, a rectangular shell, a rectangular board, a rectangular hole, a rectangular slot, a time display, a honeycomb hole, a switch button, a volume knob, a wireless data transmitter, a PCB board controller, a receiving card, a sending card and a voice horn. The design of the invention is reasonable, it is helpful to display the changes of patients' grade nursing timely and accurately, so as to facilitate the medical personnel to observe and understand directly, and avoid forgetting the level of care information. The system is convenient for timely updating the patient information of the hospital bed corresponding to the ward, adds the calling function, is beneficial for the medical personnel to rush to the rescue in time, and interfaces with the information platform of each layer of nurse service information through the formalities processing information platform, so that the patient information on the LED screen connected with the transmission equipment can be automatically updated.