本研究目的在探討無遮擋發球對桌球比賽技術之影響，做為國內教練訓練比賽之參考。以首次實行無遮擋發球的第六屆世界女子桌球錦標賽進入前八強的運動員為研究對象，將6場比賽(計12筆資料)中的各階段技術使用率與得分率表現資料進行統計分析。研究結果顯示：1.在使用率方面以相持球階段技術占大多數為43.64%。2.在得分率方面以發球搶攻階段技術占較多數為55.59%。3.對於無遮擋發球對桌球各階段技術的改變，需要再做長期的觀察追蹤分析，以便歸納出更具體之脈動規律。

The purpose of this study is to analyze the effect of the service without cover on table tennis competition skill. It would be a reference for domestic coaches to train players. Take those who were ranked the leading eight players at the 6th Women’s World Table Tennis Championships, which adopted the service without cover as study. The results that analyzed statistically the skill of using rate and score rate of every step from 6 competitions (totally 12 data) are as follows: 1. In the using rate, the skill of rally ball step are 43.64% in the majority. 2. In the score rate, the skill of serve attacking are 55.59% in the majority. 3. The change of the service without cover to table tennis skill of every step requires long-term observing and analyzing to conclude the specific pattern.