With the continuous development and application of Internet, Internet of Things, artificial intelligence and other technologies, big data has become one of the important driving forces of current social development. Financial accounting is a key financial service that plays an important role in the healthy and stable development of the financial industry. In the era of big data, financial accounting is facing opportunities and challenges. Through an in-depth discussion and analysis of the opportunities and challenges of financial accounting in the era of big data, we can better guide the development direction of financial accounting and improve the level of financial accounting. In this paper, the opportunities and challenges of financial accounting in the era of big data will be discussed and analyzed from several aspects, including opportunities, challenges, and response strategies. Through the research of this paper, the development direction of financial accounting and the level of financial accounting can be better guided.