Abstract：This study focused on the negligence category in swimming pool drowning accident in Taiwan and examined some negligence categories in order to offer useful suggestions for the swimming pool keeper. This study collected 44 court criminal judgments of drowning accidents in the swimming pools from January 1996 to August 2007, using the content analysis to explore the negligence category of the drowning accidents in the swimming pools and the relationship between the negligence category and the results of judgments. The outcomes of this study were as follows. First, the negligence category could be separated into seven kinds: lifeguard negligence, lifeguard insufficiency, no warning signs, no lifesaving appliances, facility insufficiency, care duty negligence, and improper instruction. The percentages of these categories were as follows: lifeguard negligence (59.1%), lifeguard insufficient (27.3%). Second, among the seven types in the negligence category, while 84.6% of the lifeguard-negligence defendants and 75.0% of the lifeguard-insufficient defendants who were considered guilty, 100% of the defendants of all the other types were considered guilty. (Full text)