In recent years, in the field of nursing care and welfare, hardworking such as transfer assistance pro-vides a load to waist joint, and care worker gets low back pain. So, we developed a power assist suit to re-duce the load of waist joint. The purpose of this study, not only the specification that the labor of care work-ers can be reduced, but also for assist wears for clothing such as jacket. In addition, the effectiveness of these wears is evaluated by performing experiments.