The invention discloses a polyester resin solid lubrication block and a preparation method thereof, and belongs to the field of solid lubrication materials. The polyester resin solid lubrication block is prepared from the following components in parts by weight: 30-45 parts of unsaturated polyester resin, 25-35 parts of modified hollow glass beads, 8-20 parts of emulsified oil, 5-15 parts of lubrication-assisting packing, 3-7 parts of an accelerant, 4-10 parts of a curing agent, 2-5 parts of methylsilicone oil and 2-4 parts of a reactive diluent. The prepared lubrication block has good hardness and an extremely low friction coefficient, and can be widely applied to a heavy-load sliding or rolling friction pair; distillated residue oil obtained from stearic acid is prepared by employing palm oil hydrolysis, comprehensive utilization of resources is achieved, lubricating grease does not need to be added, the polyester resin solid lubrication block has excellent self-lubricating property, and is beneficial to environment protection and iron and steel resource conservation, and a high polymer material is light and beneficial to reduction of mechanical loads.