To provide a vehicular seat preventing reduction in strength by welding, and reduction in accuracy by welding strain.

This vehicular seat is provided with: a left frame 2 and a right frame 3 formed of a bent pipe; a cushion frame 4 forming an outer frame of a seat part of the seat 1 out of the bent pipe; the sheet skin 7 forming a bag-shaped part 71 for passing the respective frames; a rear member 5 for folding back the seat skin 7; and a bolt 8 for fixing respective frame members, and is formed as a structure of being fastened by the bolt 8 by installing the bent pipe being the respective frame members, penetratingly in the bag-shaped part 71 of the seat skin 7.