To provide a device and method for drying resin by which working hour can be shortened and, in addition, the mottling of a resin film can be prevented at the time of applying a liquid resin to an insulating substrate and drying the resin.

After many insulating substrates 3 are housed in a bag-like housing body 7 having stitches and the liquid resin is adhered to the substrates 30, the resin is dried by blowing drying air upon the substrates 30 housed in the housing body 7, while both ends of a rocking arm 4 are alternately rocked upward and downward in a state where both side sections of the housing body 7 are hung down from both ends of the arm 4.