Baed on the concepts of the nursing process and patient's needs, this study adapted and utilized the Nursing Process Quality Monitoring Instrument by the Rush-Presbyterian Medicus company to monitor the quality of the nursing process, as aell as to understand its influential factors and to establish an effective evaluation tool. Data was collected from 218 in-patients of the 22 general med-surg units by 11 observers in a medical center in Taiwan. The content of the nursing process in strument includes six objectives and thirty subobjectives. Information regarding data source were patient record, patient observation, patient interview, nursing prersonnel interview, nursing personnel observation, patient environment observation, observer inference and unit management observation. tests for inter-rater and intra-rater reliability were applied. There was a 92% agreement among 2 raters and a near 100% agreement in observers themselves for intra-rater reliability. A descriptive and one-way ANOVA statistical technique was used to analyze the data. Results showed that the total quality score of the sample hospital was 67.06 (on the basis of 100). The scores for objective VI "The Delivery of Nursing Care is Facilitated by Administrative and Managerial Services" was the highest (82.6), and objective Ⅱ "The Physical Needs of the Patient Are Attended" had a majority of the quality scores of 100. Strictly speaking, the quality of the nursing process at the sample hosptial is unsatisfactory. Nurses' lack of the holistic care-concerns of their patients and families, and the nursing care more focusing on physiological rather than psycho-social needs were the essential findings of the study. Twenty-three practical suggestions based on the findings are all curcial aspects. It will provide information for hospital and nursing administrators in improving the quality of care.