In Stardew Valley, how to install Stardew Valley fishing gear can be referenced as follows:
1. Press the E key to open the backpack in the Stardew Valley game, as shown in the picture below;
2. Left-click the fishing tackle with the mouse and pick it up, as shown in the picture below;
3. Right-click the fishing rod while holding the fishing tackle, and the installation is completed, as shown in the picture below.