Circuit switching circuit board for replacing and transforming controller

The utility model discloses a line switching circuit board for replacing and transforming a controller. The line switching circuit board comprises a printed circuit board fixed on a fixed base; a first group of double-layer wiring terminals; the second group of double-layer wiring terminals are positioned on the other side opposite to the first group of double-layer wiring terminals; the four conversion terminal seats are welded in the middle of the printed circuit board in pairs, the two conversion terminal seats of the first group are located on the same straight line and are close to the first group of double-layer wiring terminals, the two conversion terminal seats of the second group are located on the same straight line and are close to the second group of double-layer wiring terminals, and the two groups of conversion terminal seats are parallel to each other; the two conversion terminal seats of the first group are connected with the first group of double-layer wiring terminals through wires on the pr