1. Find the connecting screw: Usually the connecting screw is located at the bottom of the doll's head and is connected to the doll's neck. Of course, some manufacturers leave accessories in bags, so check all product accessories carefully.

2. Align the head and body: Before inserting the connection screw, adjust the orientation to ensure the head and body are properly aligned. The doll's neck should fit neatly into the groove at the bottom of the head.

3. Directly insert the connecting screw: Insert the screw into the hole at the bottom of the adult sex doll's head and rotate it clockwise to secure it firmly. Be careful not to overtighten the screws. Otherwise, the doll may be damaged. At the same time, if it is too loose, please give it one more turn or half a turn to ensure the head is connected and fixed correctly.

4. Check the connection status: After the screw is installed, pull the head lightly to make sure it is firmly connected to the main body. If the head shakes or is loose, please retighten the screws slightly.