An air mattress including an inflatable compartment, strips, a connecting sheet and pillow strips is provided. The inflatable compartment includes a top wall, a bottom wall and a side wall surrounding peripheries of the top wall and the bottom wall. The strips are air-pervious and disposed in the inflatable compartment, wherein the strips are connected between the bottom wall and the top wall and located in a lying portion of the top wall. The connecting sheet is air-pervious and disposed in the inflatable compartment and facing a pillow portion of the top wall, wherein the connecting sheet is connected between the side wall and the strips adjacent to the pillow portion. The pillow strips are air-pervious and disposed in the inflatable compartment, wherein the pillow strips are connected between the connecting sheet and the pillow portion of the top wall.