The steps to install the fishing line on the fishing rod are as follows:

Material preparation: fishing line, fishing rod, scissors, etc.

1. First, make sure you have selected a fishing line that suits your fishing needs. Choose the appropriate fishing line material and line diameter according to the type and size of fish you want to catch.

2. Unfasten the fixing screws on the fishing reel and open the fishing reel.

3. Pass the fishing line through the thread hole or loop on the fishing reel, and then wind the fishing line around the fishing reel. You can start by holding the line between your fingers to prevent it from unraveling.

4. Find the line fixing point on the fishing reel, which is usually a small hole or groove. Pass the line through the line anchor point and wrap the line around the reel a few times to make sure it's securely fastened.

5. Cover the fishing reel and tighten the fixing screw to ensure that the fishing reel is fixed on the fishing rod. Check that the fishing line passes smoothly through the fishing rod's leader loop. If there are any tangles or obstructions, gently pull on the line to ensure it can pass freely through the loop.

6. Finally, as needed, the fishing line can be cut short, leaving an appropriate length for connecting fish hooks or other fishing gear.