Abstract: 【Abstract】   The quality index among“Medical Parasitology”exam papers and measured data for students in three majors from the university in 2010 were compared and analyzed. The exam papers were formed from the test item bank. The α reliability coefficients of the three exam papers were above 0.70. The knowledge structure and capacity structure of the exam papers were basically balanced. But the α reliability coefficients of the second major was the lowest，mainly due to quality of test items in the exam paper and the failure of revising the index of test item bank in time. This observation demonstrated that revising the test items and their index in the item bank according to the measured data can improve the quality of test item bank proposition and reduce the difference among exam papers.

Key words: Medical parasitology, Test item bank, Structure of exam paper