The evaluation of quality of HPC construction is a systematic project involving multi-factor, according to concrete preparation, transportation, pouring, conservation as evaluation index system of construction quality, establish unascertained measure comprehensive evaluation model. Applications used by the model shows that the evaluation results can objectively reflect quality of HPC construction, which provides a new method and way for evaluation of quality of concrete construction and has theoretical and practical value. Due to the ordered division of evaluation space, the unascertained measure model improves distinguish level. It has reliable evaluation result and is a practical model.