The thesis is based on the implementation of a quality control circle (QCC) with an aim at increasing the admission rate from the emergency department (ED) with respect to the total number of inpatients of the hospital (ARED), and at shortening their length of stay (LOS) so as to alleviate ED crowding in a medical center in Taipei during a period from late 2009 to January 2011. The team was composed of chiefs from related multidisciplinary units such as medical, nursing and administrative departments in which medical vice superintendent acted as the team leader and quality management center was responsible for the project. The QCC team adopted Healthcare Failure Mode and Effect Analysis (HFMEA) to evaluate every failure mode in the process of patients admitted from ED. For those causes of failure mode with a hazard score of 8 or higher (³ 8) from the Hazard Scoring Matrix, the team members attempted to improve the process through face-to-face communication and coordination under the assistance of information technology ( IT ). At the end of the project, the above causes of failure mode improved significantly and the goals were achieved as to ARED, shortening of LOS and the transfer rate. LOS consists of (1) waiting time for physician visit at ED, (2) management time, and (3) waiting time for transfer to ward. LOS can also be viewed equivalently to summation of the time waiting for service and service time at all stations through which a patient passes. In general, waiting time for service includes not only the waiting time before service but also the time the patient waiting for decision from the physician for the next step. The latter is crucial to shortening LOS. The success of the project lies in holding on the latter key factor through face-to-face communication and coordination, attitude and leadership with accountability, and the assistance of IT to alleviate the impact of the factor on and to shorten LOS of the inpatients from ED. Implementation of this project yields some implications in management as follows: first, finding out key factors and their weight (e.g., HFMEA in this project) can facilitate the achievement of the goal; second, flow processes with consensus could be written as standard operation procedure (SOP) with which the members to comply, whereas those not with consensus would need face-to-face mutual communication and “⑃-shaped” coordination; third, attitude and leadership with accountability is of help to reach the goal; and finally, IT should be used to facilitate management.