This study analyzed the influence of the design of integrated curriculum of civil engineering majors and the change of the completion semester of subjects on the quality of students'' major knowledge system and graduation projects according to the concept of CDIO engineering education based on conceive, design, element and operation. Through this, the integrated curriculum plan of the architectural courses will be reviewed to improve the quality of the graduation project and the practical abilities. This study was conducted on graduates from 2017-2020 of the university to which the author belongs. This research figured out that the integrated curriculum plan of architectural courses can effectively improve students'' comprehensive mastery of architectural knowledge. Furthermore, although the teaching team has a clear understanding of the coherence between architectural courses from the perspective of "teaching", but the students still do not have a clear understanding of the coherence between the courses from the perspective of "receiving". They stayed in mastering the contents of each course, which failed to meet the "integrated learning experiences" required by CDIO.