The invention discloses a high-precision multi-point displacement meter for an indoor small model test and a use method thereof, and an indoor small model test device, and belongs to the field of geotechnical material internal displacement monitoring. The high-precision multi-point displacement meter comprises a small displacement base point (5), a displacement lead device (16), a heavy hammer (17), a telescopic bracket (45) and a push rod type displacement meter fixing platform (29), wherein the small displacement base point (5) comprises a base body (1), an M-shaped anti-sinking claw (2), ameasuring wire (3), a wire leading disc (4) and a displacement measuring hole (7), the M-shaped anti-sinking claw (2) is inserted into the base body (1), and the measuring wire (3) penetrates the wireleading disc (4) and is pulled out of the displacement measuring hole (7). According to the high-precision multi-point displacement meter for the indoor small model test and the use method thereof, and the indoor small model test device, the high-precision multi-point displacement meter can be effectively used for monitoring displacement of the indoor small model test, and the blank in related fields is filled up.