To provide a fixing method for a pin and a fixing plate in a structure in which such items that welding and positioning therefor are not required, cost in held down low, the pin can be extracted from both ways, the pins with different diameters can be made applicable, expensive machining is not required for the pin, are attained.

A through-hole 101 is formed in the pin 100, a stem portion 2 of a plate 1 is inserted into the through-hole 101 of the pin 100, a bolt 5 is inserted into a bolt hole 3a in a head part 3 of the plate 1, and then a bolt 5 is threadedly engaged with a screw hole 152 on the side of the structure 150.