本研究以非動力特種手工具為重點，由於其種類繁多，適用範圍亦不若一般手工具來得寬廣，特別是重複性作業的場合，尤需考量將人因工程理念植入設計、整合應用人因工程加以改善，以喚起企業界重視人因、持續改善之重要。
本研究依選定之製造業所使用之手持壓板特種工具為例，透過「確認問題真因」以及「訂定對策驗證」步驟，運用變異數分析與親和圖法，確認產品製造不良係肇因於工具設計不良、坐姿高度規劃不當；經導入人因工程理念，重新設計特種工具手持握把，並秉持「以物就人」原則，依作業員人體計測資料，核算最佳坐姿作業高度，證實先前諸多人因工程學術研究與實證探討，確為工作現場改善之重要依循原則。
經由實驗後之主觀評量、客觀評比以及製程能力指標之驗證，改善結果顯著增加手工具握持時舒適性、操控性，並降低疲勞程度，增進作業效能，製程能力指標亦明顯提升，有效改善產品品質與降低成本，期望對於企業發掘變因、改善製程，有正面效益，並據以持續精進，以強化競爭能力。

The purpose of this research is focus on Non-Powered special hand tools. It’s various in styles; the scope of application is not as broad as the general hand tool. In order to arouse enterprises attach importance to human factors and continuous improvement, its need to consider that ergonomics leading-in design and applied ergonomics redesign, especially the occasion of the repeated operation.
This research uses the special tool of pressing plate as the example with selected manufacturing industry. Through 'confirm what is really cause' and 'verify what correction we do' by using ANOVA and Affinity Diagram. Clearly, bad design of tool and awkward postures will cause nonconforming products. After we redesign the handle of special tool by ergonomics, base on anthropometric measurements to check optimizing height of seated operation in accordance with 'fit equipments to human'. There is one thing for sure that previous methodology and academic research of ergonomics is really importance principles to follow on work areas improvement.
Operators who comment on subjectively, objectively and verification of Cpk value after experiments. The improvement result are apparent to comfortableness on handling and controlling properties, reduce fatigued with work, promote operation efficiency, Cpk value obviously increase also, improve the quality of the products and lower costs effectively. We expect it is a positive benefit to enterprise in mining variance and improving manufac- turing process. Furthermore, to continuous progressing and strengthening the competitive ability.

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