1. First, open a button on the side of the mattress, which is generally located at the bottom of the mattress and can be operated manually or remotely. When the button is turned on, the water valve in the mattress will automatically open.

2. Insert the prepared bucket or water pipe directly into the water valve inside the mattress and slowly pour the water into the mattress. In the process of water injection, it is necessary to pay attention to the fact that the water flow cannot be too fast to avoid the high water pressure inside the mattress.

3. When the water level in the mattress reaches the specified height, water injection can be stopped and the bucket or water pipe can be pulled out from the water valve.

4, after the completion of water injection, close the button on the side of the mattress, to ensure that the water valve has been closed. You can wait for the water inside the mattress to distribute evenly naturally, which takes several hours to a day.