In a mirror for an automobile, the adoption of resin mirror body to a mirror plate can decrease the weight of the mirror body, and the mirror plate is fixed onto a mirror holder through the welding. Therefore, this eliminates the usage of both-sided adhesive tape or adhesive agent, makes assembly processes less complicated, and thus the reduction in production cost is achieved. Furthermore, since the mirror plate can be fixed onto the mirror holder firmly and strongly even when the mirror plate is not pressed strongly to the mirror holder, excessive load on the mirror holder or the mirror plate becomes avoided. In addition, at the time of the production stage, some dimensional variation in the edge part of the mirror holder or the peripheral edge of the mirror plate becomes easily acceptable.