The invention discloses a production method of an airbed semi-finished product. The production method includes the steps that S1, an upper sheet and a lower sheet are conveyed to welding positions ofan upper sheet welding mechanism and a lower sheet welding mechanism correspondingly; S2, a pull belt is produced through a pull belt production device and is conveyed to the upper sheet welding mechanism and the lower sheet welding mechanism; S3, the front end and the rear end of the pull belt are welded to the upper sheet and the lower sheet through the upper sheet welding mechanism and the lower sheet welding mechanism correspondingly to form a finished sheet; S4, the finished sheet is conveyed to a finished sheet collection mechanism through a finished sheet output set mechanism; S5, the steps, from the step S2 to the step S4, are repeatedly executed, the finished sheet is cut off when the length of the finished sheet is equal to the length of the airbed semi-finished product, and theairbed semi-finished product is taken out through the finished sheet collection mechanism. By means of the production method, pull belt manufacture, pull belt and upper sheet welding and pull belt andlower sheet welding can be completed at a time, the automation degree is high, manpower can be effectively saved, and the improvement of the production efficiency of airbeds is facilitated.