The quality of financial accounting data is of great research significance to the investment efficiency of enterprises, but its accuracy is still slightly insufficient, on the basis of which, investment efficiency of the enterprise is analyzed, and surplus quality is variably analyzed in terms of the financial report produced by the financial accounting data quality. Thus, it comes out the result that the quality of the financial accounting data has a positive effect on the investment efficiency of the enterprise, and the method of improvement is also described. Therefore, the relationship between the investment efficiency and the quality of financial accounting data is essential, but also existing the advantages and disadvantages, which have a great active impact on investors, management of the enterprise or project decision-making.