The government serves must keep pace with the times, can draw close to populace's idea, meets populace's need. This study, which aims to investigate the satisfaction level of fishermen towards the public service of the Southern Coastal Patrol Office of the Coast Guard Administration on the five dimensions of PZB Gaps Model of service quality. Six suggestions based on the aforementioned results are proposed in the study as references for Coast Guard authorities to carry out an overall review,enabling the advantage coastal patrol services to create a bigger public interest, and the fisherman feel the coastal patrol institution's innovation and the progress.