Abstract: An evaluation index system of hightech research project was established, and the evaluation model for hightech research project was put forward based on analytical hierachy process (AHP) and internal fuzzy technique order preference by similarity to an ideal solution (TOPSIS). And the weight of evaluation index was made using AHP, the interval fuzzy matrix was set using fuzzy theory. The positive ideal solution, negative ideal solution and proximity were calculated. The rank of hightech research project was made by comparing the proximity. At last, an example was discussed to validate the practicability and feasibility of the established index system and model.