First, to maintain order.
The hospital elevator is again divided into layers of stops, such as some only in the 1-8 floor stops, some straight to the 10-20 floor and so on. At the same time, hospitals have a very high flow of people, and there are often wheelchairs, pregnant women, wearing medical equipment and other special patients, no one to maintain order, peak hours, may be very chaotic, some patients are difficult to squeeze on the elevator.
Second, to ensure efficient operation.
Hospitals often encounter some patients in need of first aid or emergency surgery, these patients need the elevator urgently to the designated floor, or in some cases, the operating room or a ward needs special emergency equipment, this time the elevator needs to be operated accurately, will be the patient or the doctor, the equipment, etc. directly to the designated floor, to avoid the layer stops, saving time.