The work aims to improve the passenger vehicle design thinking model under the "intelligent transportation" system, enhance the objectivity and operability of traditional design thinking methods, and establish an innovation mechanism of human-vehicle coexistence. With the "intelligent transportation" system as the benchmark, and with the "poly" system perspective as the core, relevant factors such as heaven, earth, people and vehicles were integrated and fused to formulate an a paradigm of "intelligent transportation" integrated system design innovation and development, as well as a growing application program of future intelligent vehicle design quality. The results proposed the correlation of "intelligent transportation" integrated system innovation, i.e., explicit correlation, implicit correlation, and human-machine collaborative innovation correlation. In conclusion, with the continuous improvement of relevant influencing factor samples and the persistent deepening of probing channels, the research on the integrated innovation quality management of intelligent vehicle systems can effectively improve the continuous exploration mechanism of intelligent vehicles, and also provide references for the integration of related professional theories and system optimization.