This paper introduces EDBench, a large-scale, high-quality electron density dataset, to address the issue of overlooking the importance of electron density (ED) in existing molecular machine learning force fields (MLFFs). Based on PCQM4Mv2, EDBench provides accurate ED data for 3.3 million molecules and evaluates the model's ability to utilize electron density information through various ED-centric benchmark tasks, including prediction, search, and generation. The evaluation results demonstrate that learning-based methods utilizing EDBench can efficiently compute ED with comparable accuracy while significantly reducing computational costs compared to conventional DFT calculations. The EDBench data and benchmarks are freely available, and are expected to contribute to ED-based drug discovery and materials science research.