Since ancient times, accounting, as an applied science, has always relied on a certain social and economic environment, and is affected by it. The development of accounting has always been adapted to the whole economic development. The emergence of cloud computing accounting has a profound influence on the theory and practice of traditional accounting. Therefore, starting from the emergence and development of traditional accounting and network accounting, the paper compares the concept, characteristics, functions, theory and practice, and takes the influence of network accounting on traditional accounting as the main clue. And the corresponding countermeasures are put forward for the security and related problems of network accounting. The development of Internet information technology has brought about the era of big data, and has influenced two basic functions of traditional accounting: Accounting and accounting supervision. Therefore, the accounting industry will face major reform. This paper starts with two basic functions of traditional accounting industry, comprehensively and deeply analyzes the influence of big data era on traditional financial accounting, analyzes the advantages and disadvantages of big data era, and discusses the future transformation and development of traditional accounting industry.<br>
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