The invention provides a mid-high temperature solid surface long-term accurate temperature measurement system of a complex environment, comprising a non-contact type temperature measurement instrument, an incubator, a dustproof sleeve, and a swirl generator, wherein the incubator is divided into a front cavity and a rear cavity through a baffle, the temperature measurement instrument is arranged in the rear cavity, the dustproof sleeve is arranged in the front cavity; the front end of the dustproof sleeve is provided with a lens and the swirl generator, while the front end of the swirl generator is provided with a sighting tube. A probe aims at the temperature measurement surface through the dustproof sleeve, the lens and the sighting tube. The swirl generator generates a certain positive pressure at the front of the dustproof sleeve, so that the outside pollutant is prevented from approaching the dustproof sleeve and the lens, and heat ray from the surface of the measured object is directly introduced into a temperature measurement probe without being absorbed by the participatory media. The sighting tube prevents the difficulty brought by the correction of other heat radiation to the temperature of the temperature measurement instrument. The incubator and the dustproof sleeve provide a favorable working environment, so the invention can perform long-term, stable, continuous, and accurate temperature measurement in the complex environment.