A self-enclosable inflatable mattress has a mattress body, a valve and a bag. The mattress body has a sidewall and a chamber being defined in the mattress body. The valve is mounted through the mattress body. The bag is attached to the mattress body and has a surrounding sheet, at least one holding sheet and at least one fastener. The at least one holding sheet is mounted on a corresponding margin of the surrounding sheet and detachably connected to a corresponding surrounding sheet. The fastener is mounted between the surrounding sheet and the holding sheet. The self-enclosable inflatable mattress is easily stored compactly and prevents dust from contacting the mattress body during storage.