An evaluation procedure was proposed for buildings adjacent to excavation by taking the settlements, inclinations and damage coefficients of buildings as typical indexes. Interval theory was used to describe the randomness of these above indexes. For the representativeness of these indexes, the settlements and inclinations of buildings were calculated by finite element simulation, and the damage coefficients were introduced to reflect the damage states of buildings. Four membership functions of S-type were proposed for the fuzziness of evaluation standards. Super weight method of real numbers was introduced and improved to interval numbers for the characteristics of building risks. Application results have shown that there are deviations among the risk grades judged respectively by these three indexes, but the risk grades synthetically judged correspond with the measured results approximately.