We live in the era of knowledge economy with highly developed information, and information is an indispensable strategic resource. Information technology is widely used in various industries and combined with traditional industries; it is the catalyst to promote the development of national economy and society, and informatization promotes the development of modernization of cities or regions. Accounting, as the internal economic pillar of hotel enterprises, plays an irreplaceable role in optimizing the allocation of resources, perfecting the structure system, safeguarding the interests of enterprises and so on. Therefore, the depth of accounting informatization directly determines the degree of hotel informatization and directly determines the operation and management level of the whole hotel. Many hotel enterprises have realized accounting informatization, but there are still a variety of problems, which affect the role of accounting in hotel operation and management, so it is very necessary to study the optimization of accounting informatization in hotel enterprises.