1. Help the old man up at once to see if he is injured.
2. If the elderly are injured, they should immediately call 120 or the emergency number to send them to the hospital for treatment.
3. If the old man is not injured, but his mood is unstable, comfort him and ask if he needs help.
4. At the same time, the matter should be reported to the property or elevator maintenance company, so that they can check whether there are potential safety hazards in the elevator and repair it in time.