A set of furniture fittings, comprising: a first wall (24, 204); a second wall (28, 208) provided with a first structure; and a mounting device provided with a second structure; that the first structure and the second structure are detachably engaged with each other in a tool-free manner, and that the second wall (28, 208) is mounted on the first wall (24, 204) through the mounting device. wherein the second wall (28, 208) includes a first portion (28a, 210), a second portion (28b, 212), and a middle portion (28c, 214) connected between the first portion (28a, 210) and the second portion (28b, 212), and at least one of the first portion (28a, 210) and the second portion (28b, 212) is provided with the first structure, wherein at least one of the first portion (28a, 210) and the second portion (28b, 212) is threadedly connected to the middle portion (28c, 214), the set of furniture fittings further comprising a connection device disposed on the first wall (24, 204), wherein the connection device is configured to connect with the mounting device, wherein the mounting device includes a pin, and the connection device includes a fastening member configured to be fastened to the pin, wherein one of the first structure and the second structure includes a first projection, and the other of the first structure and the second structure includes a hole configured to work with the first projection, wherein the first projection has a first section (S 1) and a second section bent with respect to the first section (S 1), and the first section (S 1) and the second section are configured to be inserted into the hole and engage with a hole wall of the hole, wherein one of the second wall (28, 208) and the mounting device includes a second projection, the second projection includes an elastic section and a supporting section connected to the elastic section, and the supporting section is configured to support the other of the second wall (28, 208) and the mounting device. a first wall (24, 204); a second wall (28, 208) provided with a first structure; and a mounting device provided with a second structure; that the first structure and the second structure are detachably engaged with each other in a tool-free manner, and that the second wall (28, 208) is mounted on the first wall (24, 204) through the mounting device. wherein the second wall (28, 208) includes a first portion (28a, 210), a second portion (28b, 212), and a middle portion (28c, 214) connected between the first portion (28a, 210) and the second portion (28b, 212), and at least one of the first portion (28a, 210) and the second portion (28b, 212) is provided with the first structure, wherein at least one of the first portion (28a, 210) and the second portion (28b, 212) is threadedly connected to the middle portion (28c, 214), the set of furniture fittings further comprising a connection device disposed on the first wall (24, 204), wherein the connection device is configured to connect with the mounting device, wherein the mounting device includes a pin, and the connection device includes a fastening member configured to be fastened to the pin, wherein one of the first structure and the second structure includes a first projection, and the other of the first structure and the second structure includes a hole configured to work with the first projection, wherein the first projection has a first section (S 1) and a second section bent with respect to the first section (S 1), and the first section (S 1) and the second section are configured to be inserted into the hole and engage with a hole wall of the hole, wherein one of the second wall (28, 208) and the mounting device includes a second projection, the second projection includes an elastic section and a supporting section connected to the elastic section, and the supporting section is configured to support the other of the second wall (28, 208) and the mounting device.