Bra try-on adjustment device

The invention provides a bra try-on adjustment device. The device comprises a main body and an adjustable breast-shaped unit, wherein the main body is formed according to the shape and size of the upper half part of a human body; the adjustable breast-shaped unit is arranged at the breasts corresponding to the main body; a real upper half human model is simulated by virtue of the main body and the adjustable breast-shaped unit; the adjustable breast-shaped unit is provided with a bearing surface and an adjustment module; the bearing surface is exposed outside the main body; the adjustment module is accommodated in the main body and connected with the bearing surface to move; a control end of the adjustment module extends out of the main body; and by operating the control end, the adjustment module is connected with and drives the bearing surface to move, so that the relative position between the main body and the adjustable breast-shaped unit can be changed for simulating the sizes of real upper chest circumf