The utility model discloses a parallel fixing device of combination pin -connected panel tray, two plastic tray dish supports are fixed through the draw -in groove, form the plastic tray dish support of a completion, the other end of plastic tray dish support is fixed with and holds in the palm the hook, the tip that holds in the palm the hook is provided with the through -hole, connect through the fixed plate between two parallel plastic tray dish supports, it is fixed through the fastener between fixed plate and the support hook, connect through the connecting rod between fixed plate and the plastic tray dish support, the terminal surface at the fixed plate is fixed to the one end of connecting rod and fastener, another terminal surface of fixed plate is fixed with the cardboard groove, this kind of parallel fixing device of combination pin -connected panel tray on the basis of combination pin -connected panel tray, connects through the fixed plate, utilizes connecting rod and fastener to coil the support with plastic tray with the fixed plate is fixed, makes the combination assemble the tray that forms and connects more firmly, prevents its condition that the appearance misplaced and the post assembling rocks.