The extent of a bow of a semiconductor device is suppressed in a case where the fillet width of an underfill resin is asymmetrical. The center position 12 of a chip 1 is caused to deviate from the center position 13 of a wiring substrate 2 in a direction (the direction of the arrow B) reverse to the deviation direction (the direction of the arrow A) of the center position 11 of an underfill resin 4 from the center position 12 of the chip 1. The center position 14 of a resin for encapsulation 6 is caused to deviate from the center position 13 of the wiring substrate 2 in the same direction (the direction of the arrow A) as the deviation direction (the direction of the arrow A) of the center position 11 of the underfill resin 4 from the center position 12 of the chip 1.