The invention belongs to the technical field of chain lubricating oil, and particularly relates to high-temperature-resistant and anti-coking synthetic ester type chain oil as well as a preparation method and application thereof. According to the synthetic ester type chain oil provided by the invention, the specific dipentaerythritol ester and the trimellitate are synergistically used as synthetic ester
base oil, the synthetic ester
base oil is optimally compounded with the anti-wear
reagent at extreme pressure, the
antioxidant and the anti-
rust agent, the synergistic effect among the components is utilized, and under the condition that a
viscosity index improver is not added, the synthetic ester type chain
oil can be used for preparing the high-
viscosity chain oil. The synthetic ester type chain oil which is good in low-temperature fluidity, high in
flash point, low in
friction coefficient, small in wear scar
diameter, low in corrosivity, excellent in adhesion performance, small in
evaporation loss and free of coking at the high temperature of 300 DEG C is obtained, and the requirement for long-acting
lubrication in a continuous high-temperature environment is met.