The invention relates to a splicing auxiliary device, and particularly relates to a splicing auxiliary device for furniture production. The splicing auxiliary device for furniture production can fix furniture during splicing, does not incline during splicing, and is high in working efficiency and good in quality. The splicing auxiliary device for furniture production comprises a mounting bottom plate, a placing assembly and a clamping assembly, wherein the placing assembly is mounted on the mounting bottom plate and is placed in a sliding mode; and the clamping assembly is mounted on the mounting bottom plate and is clamped in a sliding mode. According to the splicing auxiliary device for furniture production, the furniture needing to be spliced can be placed through the placing assembly, meanwhile, the placing height of the furniture can be adjusted according to needs, the distance can be adjusted according to the needs of people through the clamping assembly, meanwhile, the furniture needing to be spliced can be clamped, the furniture needing to be spliced can be fixed through a fixing assembly, the furniture is prevented from moving front and back during splicing, and a left mounting plate does not need to be pushed manually through a driving assembly.