THE PURPOSE OF THIS PAPER IS TO EVALUATE THE CITIZEN'S PARTICIPATION SYSTEM WHICH THE RESIDENTIAL AREA IMPROVEMENT PROJECT ACCEPTED IN SYONAI DISTRICT, TOYONAKA-CITY, OSAKA-HU. THE RESULTS ARE AS FOLLOWS; FIRST, THE RESIDENT COUNCIL SYSTEM CONTRIBUTE TO REFLECT THE CITIZEN'S NEEDS IN THE IMPROVEMENT PLAN. SECOND, DUE TO THE CITIZEN'S PARTICIPATION SYSTEM. MANY RESIDENTS AND THE COUNCILORS COOPERATED IN GETTING THE PROJECTS WORK DONE.