The invention discloses a submerged arc welding processing method of a curtain wall buried element. The method comprises the following steps including welding tooling manufacturing, anchor bar clamp installation, marking of points to be welded, welding seam size control, anchor bar clamping and installing, welding point alignment, welding flux filling, welding preparation, welding, welding flux recovery and the like. A simple pressure submerged arc welding equipment manufactured by matching a modified woodworking bench drill with an ordinary electric welding machine is used for welding the curtain wall buried element, the modified equipment electric welding machine and the woodworking bench drill can be utilized in the subsequent engineering, the primary investment cost is not high, the used welding fluxes are cheap, and the consumption is not great; the operability is high, and the quality is guaranteed; the process is simple, the mastering is easy, and the technical requirements on operators is not too high; the welding efficiency is high, the construction speed is high, and the welding time of each anchor bar is within 30s under the skilled condition.