In the face of the current situation of general stagnation of real estate, strengthening cost budget management and inwardly seeking benefits have become the basis and key to maintain the core competitiveness of real estate enterprises. This paper constructs a decision tree model by calculating the information entropy decline speed of financial data in real estate development, uses the decision tree to analyze the financial costs and budgets in real estate development projects, and realizes the effective control of financial costs and budgets. Based on the theoretical basis of the integration of industry and finance, a financial management innovation platform for real estate development is designed. The empirical analysis of the case shows that after applying the financial management innovation system, the budget completion rate of the real estate development project can reach 100.10%, which achieves better results in the cost and budget management of the real estate development project. At the same time, it is found that the on-line financial management innovation platform can assist the real estate development enterprise to improve the financial processing efficiency, and further lay the foundation for the improvement of the enterprise’s financial management capability. The new financial management intelligent system constructed in this paper is able to analyze, transfer and share financial data in real time with the help of intelligent technology, thus providing more accurate and practical information for the use of financial decision-making in real estate development, which is conducive to improving the profitability of real estate development enterprises.
