housekeeping department also includes the management cost of substantial manpower and material resources consumed on housekeeping management. The housekeeping department must satisfy the customers’ requirements and provide the customers services at any time in 24 hours; therefore, it needs the three-shift workday system, and a large number of employees. The salary expenditure is really huge, along with the consumption of room material and supplies, and cleaning products, they are considered as the hotel’s important expenditure based on cost calculation, thus, this department can affect the hotel’s income and expenses directly. When the housekeeping quality is fixed, the faster is the housekeeping efficiency, the lower is the required personnel cost; hence, the housekeeping efficiency is one of the important indexes that influence the hotel’s business performance. However, until now, there are no relevant articles that discuss the housekeeping efficiency question completely. For this reason, the research will imitate the process capability index, and propose a housekeeping efficiency index to offer hotel owners the way to evaluate their housekeeping efficiency objectively. Besides, the research will deduce the statistical properties of housekeeping efficiency index, and construct the evaluation mode of housekeeping efficiency; finally, it will take a hotel in Central Taiwan as an example to explore its housekeeping efficiency