The fully automatic one-to-two mask machine is connected with a mask body machine and a diverter, which is connected through the diverter and the earband fusion splicer. After the machine starts, the mask body machine produces the product and transfers it to the conveyor On the shunt machine, the earmuff part is welded by transferring the mask from the shunt machine to the earband welding machine to complete a complete mask finished product. The entire process realizes a fully automated production process without manual operation, that is, one main machine and two ears. Belt-connected, the output can reach 90-120 pcs/ min.