The invention discloses a rack of a multi-cylinder long mesh paper machine for producing high filler paper. A flow pulp box mounting position, a mesh section mounting position, a press section mounting position, a front drying section mounting position, a sizing machine mounting position, a rear drying section mounting position, a calender mounting position and a paper rolling section mounting position are arranged on the rack in sequence, proper intervals are formed between positions, the overall length of the rack is increased by 10-25m relative to the overall length of the rack of a traditional multi-cylinder long mesh paper machine of the same width and speed, the length of the mesh section mounting position is relatively increased by 4-6m, and enhancing drying mounting positions can be arranged in front of and behind the sizing machine mounting position. The problem that the traditional rack cannot be used for mounting the multi-cylinder long mesh paper machine for producing the high filler paper is solved, and the demand for mounting the multi-cylinder long mesh paper machine for producing the high filler paper is met.