The invention relates to a method for acquiring process task block dependency based on matrixes. The method aims to solve the problem that in existing exhaustion method search, it is needed to
traverse all possibly occurring orders and meanwhile continuously construct test cases, and consequently time and labor are wasted. According to the method, first, test cases are input; second, the test cases are converted into a relation matrix; third, when alpha is greater than or equal to beta, the fourth step is turned to, and when alpha is smaller than beta, the ninth step is turned to; fourth, correct test cases different from wrong test cases are determined, and the fifth step is turned to; fifth, when alpha is greater than beta, the sixth step is turned to, and when alpha is equal to beta, the seventh step is turned to; sixth, a relation
compatibility matrix is obtained, and the eighth step is turned to; seventh, a dependency matrix is obtained, and the thirteenth step is turned to; eighth, a dependency matrix is obtained, and the thirteenth step is turned to; ninth, correct test cases different from wrong test cases are determined, and the tenth step is executed; tenth, a complementary relation matrix is obtained, and the eleventh step is turned to; eleventh, a new complementary relation matrix is obtained; twelfth, a dependency matrix is obtained, and the thirteenth step is turned to; and thirteenth, dependency is obtained and output. The method is applied to the field of task block dependency determination.