Multi-function portable inflated tent

The utility model discloses a multifunctional portable air dome. Wherein, supporting air columns are located on the edges of the tent; the improvement is that an aerated mattress is provided under the tent, and zippers capable of pairing are provided on the bottom margin of the tent and on the mattress. When the tent and the mattress are aerated, the zipper is used to combine the tent and the aerated mattress. An upper convex edge is arranged around the mattress, which can keep water out of the tent due to waterlogging on ground in raining days, and the aerated mattress can be also used as a raft separately to satisfy the playing of people on water which extends the function of the tent and realize the multifunction.