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With the development of socialist market economy, the current project cost management system in China has gradually exposed some disadvantages, which affect the normal operation and development of construction enterprises to a certain extent. This paper analyzes the research status of PCM, discusses the characteristics of BD technology, the concept of BIMT and the concept of PCM, and finds the method of mutual information feature selection. The results show that in 2020, the output value of construction projects in China is the largest, with 5.54 billion yuan in the first quarter, 5.83 billion yuan in the second quarter, and 6.77 billion yuan in the third quarter. Due to the large number of participants, long construction period and large amount of information in the construction process, these greatly increase the difficulty of PM, but also increase the difficulty of PCM, making some cost problems easier to appear.

Project cost Management Strategy based on Big Data and BIM