Treadmill is one of the common fitness tools, but if the belt of treadmill slips, it will affect the exercise effect. The main reason for belt slippage is insufficient friction, which may be caused by belt slack and insufficient friction of carpet. Here are some common fixes:

1. Adjust belt tightness: tightening the belt will increase friction. You can adjust the tightness by adjusting the screws under the machine.

2. Clean the treadmill: After the treadmill is used for a period of time, the machine will be covered with dust and grease, which will affect the friction. Cleaning the machine can make friction normal.

3. Replace the belt: If the belt is worn or damaged, it needs to be replaced with a new belt. Under normal circumstances, the belt should be replaced in time after one year of use.

4. Replace the carpet material: If the friction of the carpet placed on the treadmill is insufficient, you can replace the high-density carpet material, which can increase the friction.

In short, the treadmill belt slips and needs to be repaired in time, otherwise it will not only affect the fitness effect, but also lead to the failure of parts due to insufficient friction and increase the maintenance cost.