快速壘球運動於臺灣體育及競技運動發展中占有重要地位，投手的表現經常是控制整場比賽的關鍵，綜觀近幾年壘球運動之國際賽事成績，若欲突破現有水平，則以長遠之培育計畫厚植中學投手投擲能力便是第一要務。有鑑於此，於投擲訓練初始便應提供嚴謹之動作訓練，其中，尤以快速直球最為重要，針對快速直球投擲方法進行探討即有其重要性與必要性。唯目前國內已有之相關文獻整體來說皆呈現片段、脈絡不完整的研究趨勢，缺乏整體投球技術及直球投擲動作之應用性文章，因此，本研究將詳細陳述直球之投擲方法、中學投手目前常見之典型錯誤以及相應之修正方法，以供教練指導投手學習時之參考，希冀能對國內教練之專業知能成長有所貢獻，進而提升臺灣快速壘球運動整體實力。

Fast-pitch softball plays an important role in the development of physical education and sport in Taiwan. The performance of pitchers is usually the key issue for controlling the games. When we look back our accomplishments of international completions over the years, it is our primary task to draw up a longterm program for improving high school student-pitchers' pitching ability, if we want to break through the present achievement level. Hence, rigid skill training is necessary while high school student-pitchers start to train and the fast-pitch is most important skill within all the pitching skills. That means it is very crucial and essential to investigate the patterns of throwing fast ball in fast-pitch softball. However, present local studies merely show fragile and incomplete results, and the application studies about pitching and fast-pitch are rare. This study will explicitly illustrate the patterns of throwing a fast ball, the typical errors that high school student-pitchers usually make, and the corresponding correction methods which are useful for coaches. The results hopefully contribute to the professional development of domestic coaches, and further to improve the competition strength of fast-pitch softball in Taiwan.