The utility model relates to a subassembly is fixed in seamless concatenation of special -shaped curved surface aluminum plate assembled, including first setting element, second setting element and adjusting part, first setting element is located second setting element below, the adjusting part sets up between first, second setting element, and the adjusting part includes metal sleeve, the lead screw with play spring piece, the metal sleeve cover is established on the lead screw, lead screw one end and the 2nd positioning piece connected, playing the spring piece cover and establishing on metal sleeve, metal sleeve one end is equipped with keeps off the ring, play spring piece one end and keep off the ring to leaning on. The utility model discloses a subassembly is fixed in seamless concatenation of special -shaped curved surface aluminum plate assembled has solved traditional special -shaped hyperboloid unit plate block seam crossing roughness problem, can be fast, make things convenient for to such an extent that finely tune aluminum plate to satisfy face seam overall flatness stability control requirement, in addition, its mounting structure is simple, can improve installation quality, installation effectiveness, moulds the midea appearance physique of setting out, guarantees the quality control of project effectively, reaches best effect.