自針對心理壓力的研究盛行以來，心理壓力和工作績效的關係得到了學界諸多領域的關注。警察是高壓群體，在量化和質化研究的雙重驗證下，得到了學界一致性的認同。而警察的壓力所影響的並不僅只是其個人工作績效，更關乎整個社會的治安狀況。此外，對於壓力而言，局限於測量警察族群的壓力，對於解決問題本身沒有根本性作用。基於以上原因，本研究專注於警察高壓的原因及形成機制。根據非正式預訪談得知所長是警察生涯中壓力最為突出的一個階段，故本研究將目標鎖定在警察階段的所長族群。為了挖掘所長高壓原因及其形成機制，本研究透過質化深入訪談的研究方法，深入訪談了大臺北地區7位男性派出所所長和3位女性所長。經過紮根理論的研究流程和資料分析法，結果發現所長階段的壓力較為嚴重的原因主要在於其特殊的工作特點，以及家庭和工作的難以平衡；就其工作特點而言，包括：壓力多元化、工作時間過長、體力硬線要求高、休假異常、績效結構欠佳、公務冗雜和媒體壓迫。也正是因為工作特點而使得其較難在工作與家庭之間取得平衡。對於女性而言，刻板印象和社會期待均使其在警察工作中處於劣勢，但優秀的表現也會獲得更多的讚賞，與期望破壞理論（Expectancy Violation Theory）一致；而男性也恰正是因為刻板要求和社會期待使得其肩負著和女性警察機制不同但是程度相當的心理壓力。總體而言，警察體制內受到詬病的是績效考核方式，績效結構不合理並且指標沒有上限，專案頻繁，儘管不同來源的所長最終都將自我調整心態到了無可奈何的接受狀態。也正是這一結果，證明目前警察體系內協助警察舒緩壓力的管道較為匱乏，亟需改善和解決。 / The influence by stress on performance is one of the popular research issues. Former qualitative and quantitative researches proved that policeman is one of jobs with high working stress. Stress on policeman not only affect their own working performance but also societal safety. Only measurement of stress cannot make policeman perform better. Thus, this study focuses on causes and mechanism of policeman’s stress. Police inspectors in local police stations are with extremely high working stress according to informal interviews. This study interviewed three female and seven male police inspectors from Taipei City, New Taipei City and Keelung in Taiwan. After data analysis with Grounded Theory, this study concludes that special working conditions and unbalance between family and work are the main sources of stress on policemen. This job is stressful with several traits including multi-faced stress, overtime work schedule, exhausting physical energy, irregular days-off, unreasonable performance evaluation structure, complicated working issues and bothering media. It is these working conditions that make policemen stressful and difficult to make balance between work and family. Furthermore, stereotypes and social desirability burden female policemen. However, consistent with Expectancy Violation Theory, female policemen would also gain more recognition and compliment when they perform positively; Male policemen are required to take over more work for female policemen because of social desirability. In general, the biggest source of stress for policemen in Taiwan is the unreasonable performance evaluation system. It comes out as taking it without other alternatives for most policemen no matter where they were trained before. There has not been effective assistance for policemen within police system in Taiwan.