This study is focused on the questionaries regarding the physiological comfort and body fitness and freedom of movement for clean room smock and intended to present the basic information in designing more comfortable clean room wear through seizing the discomfort of wearet. The study is designed to survey and analyze the actual wearing condition and its problem applied to 400 workers assigned with two semiconductors manufacturing plants. The result of survey are as follows. 1. Clean room workers bras panties running shirts and 내찬 the as basic underwear since they absorb sweat protect their bodies and make them feel safe and comfortable throughtout the whole year. 2. With regard to body fitness most of the subject assessed it to be suitable but the girth of neck waist and hood is founded to be tight in many cases. 3. Most important selecting criteria of clean room smocks are adaptability of movement body fitness and carrying-ability. Most of repondents prefer side zipper and rib-knitted fabric as the fastening system. 4. As for freedom of movement it is disclosed that the subjects showed more or less of their complaints against its wearing easiness for parts of waist neck armpit and slacks adaptability and adaptability of movement.