Compared to traditional paper & pencil test， computer-based test has obvious ad-vantages in improving reliability and validity of test. With the increasing popularity of computer-based test， making ICO examinations（International Basic Science and Clinical Sciences Assessment for Ophthalmologists） computerized can be realized in our country for the reason that we own hardware and software required by computerized exam， including standardized examination room， professional test personnel， examinee with computer skills， etc. Currently， we can rely on available resources to carry out pilots in the areas meeting the condition of computer-based test， take the form of paper and pencil and computer at the same time， and then promote the process of computer-based ICO examina-tions.