The utility model relates to a multifunctional test-tube brush which comprises a rod body (1) and a plurality of brush furs (2). The plurality of brush furs (2) are lengthways arranged on the rod body (1). Two sides of the lower end of the rod body (1) are connected with a first movable rod (3) and a second movable rod (4). The first movable rod (3) and the second movable rod (4) are respectively connected with the rod body (1) in a shaft mode. The plurality of brush furs (2) are lengthways arranged on the first movable rod (3) and the second movable rod (4). A reset spring (5) is arranged between the first movable rod (3) and the second movable rod (4). The multifunctional test-tube brush is improved on the basis of an ordinary test-tube brush. Movable rods capable of expanding are added on the bottom of the rod body. A taper body and foster vessels and other containers with large areas can be brushed after the movable rods expand, the expanded movable rods can fast reset after the external force quickly disappears, the vertical state of the test-tube brush can be kept, and the multifunctional test-brush is used for brushing the test-tube. The multifunctional test-tube brush is simple in structure and convenient to apply.