The speed and slope of fast walking on the treadmill need to be properly adjusted according to personal physical condition and exercise goals. Generally speaking, the slower the speed, the higher the slope can be; The faster the speed, the lower the slope can be.

Here are some suggestions for your reference:

1. The jogging speed is generally 8- 10km/h, and the slope is not more than 3.

2. The walking speed is generally 5-8km/h, and the slope is not more than 5.

3. The running speed and slope on the treadmill can also be adjusted according to personal conditions. Generally speaking, the speed is 5- 10, and the slope is controlled between 0- 10%.

In short, the speed and slope settings on the treadmill need to be properly adjusted according to personal conditions and exercise goals to avoid sports injuries and achieve the best exercise effect. If you have any health problems or questions, please consult a professional doctor or coach.