For the purpose of investigating various wounds in tennis game, this study was conducted and analyzed with 25 men players and 22 women players of high schools and universities from May. 1986 to October 1986. The conclusion was as fellows. ① The most frequent parts of wounds in men was 13 cases of knee wounds(25.5%), and 11 cases of ankle-joint wounds (21.6%). The most frequent parts of wounds in women was 10 cases of wrist-joint wounds(28.6%) and 8 cases of knife wounds (22.9%). The frequency of bruise was 24 cases in men(47.1%) and 17 cases in women(48.6%) ② The frequency of re-wounds in the same part was 2.04 times per man and 1.59 times per woman. ③ The cause of wounds both in men and in women was mostly hard technical training above their ability: (man: 44.0% : woman: 40.9%). The frequency of the wounds during practice was 13 cases in men(52.0%) and 13 cases in women (59.1%). ④ Both men and women were wounded moat frequently in winter: (10 cases in men(40.0%) and 8 cases in women(36.4%)). ⑤ The most frequently used methods of treatment were 9 cases of physical theraphy in men(36.0%) and 5 cases of injection-acupuncture theraphy in women(22.6%). And both in men in women, 4 cases of drug treatment (18.2%) and 4 cases of massage-finger pressure theraphy(18.2%) were followed. The proportion of perfect treatment and imperfect treatment was 4 to 6. Most perfect treatments coincided with injection-acupuncture theraphy. 18 men(72.0%) and 11 women(50.0%) were healed be doctors. The period of treatment was from 5 days to 6 months, and in most cases it was less than a month.