1. When the body is tired, taking drugs, drinking or having physical disturbance, stop using ladders;

2. The ladder should be placed in the stable air, and should not be placed on the ice, snow or slippery surface without anti-skid and fixed equipment; the maximum load-bearing mass should not be exceeded during operation;

3. Stop using ladder in strong wind;

4. The metal ladder conducts electricity to prevent it from approaching the live place;

5. When climbing, face to the ladder, hold firmly with both hands, and keep the body center of gravity in the center of the two ladder posts;

6. During operation, don't stand on the ladder within 1m from the top of the ladder, always keep the safe maintenance height of 1m, and don't climb the highest support point on the top;

7. Do not exceed the top of the head when working, so as to avoid losing balance and attack risk;

8. Do not cross the ladder directly from one side to the other.