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Along with the rapid development of electronic technology and boundary scan test technology, some new boundary scan test algorithms have emerged.The boundary scan test algorithm generally refers to the test vector generation algorithm of boundary scan test technology which is on the basis of the interconnection model. Generate reasonable test vector set can cover the failure as much as possible in the shortest time.Some commonly used test algorithms are analyzed,And then analyzed two kinds of commonly used algorithm:Equal Weight Algorithm and CSA.Through the analysis of boundary scan test algorithm, formula and theorem inference, then proposed two kinds of algorithms:Equal Weight Optimization Algorithm and Weight Increment Algorithm.Compared with the pre-algorithm,the Equal Weight Optimization Algorithm reduces the probability of the appearance of the symptom confusion; and The Weight Increment Algorithm reducing confusion rate and error rate of the symptoms and signs.Generally,the new algorithm improves the completeness and compactness of test vectors.