Novel chair seat and backrest support fixing tool with transverse positioning function

The invention discloses a novel chair seat and backrest support fixing tool with a transverse positioning function. The novel chair seat and backrest support fixing tool comprises a base and a supporting table, a chair seat placing table and a chair seat fixing table are sequentially and fixedly arranged on the base in front of the supporting table from the front to the back, a horizontal cross beam is fixed right above the chair seat fixing table on the front side of the supporting table, a backrest support fixing table is arranged above the cross beam, the supporting table is provided with apressing block which moves up and down above the backrest support fixing table, the pressing block is driven by a pressing air cylinder, a pair of transverse positioning blocks are arranged in frontof the two sides of the supporting table, and the transverse positioning blocks are fixed to the supporting table through transverse adjusting supporting rods. According to the novel chair seat and backrest support fixing tool