Abstract: IN RECENT YEARS, SEVERAL NEW TOOLS FOR CITY PLANNING WERE ESTABLISHED. THESE ARE A SPREAD OF DISTRICT PLAN, AN AMENDMENT OF CITY PLANNING LAW, AND DISTRICT PLANNING SYSTEM, AN ENACTMENT OF CITY MASTER PLAN AND HOUSING MASTER PLAN. IT IS A GREAT ISSUE TO ASSEMBLE THESE TOOLS INTO EXISTING CITY PLANNING SYSTEM. IN THIS PAPER, TAKING TOKYO METROPOLITAN WARDS, THE FOLLOWING SYSTEM IS CLOSED-UP. THAT IS;(1) A CITY MASTER PLAN IS MADE INCLUDING A HOUSING MASTER PLAN,(2) DISTRICT PLANS ARE MADE ACCORDING TO THIS MASTER PLAN, AND (3) DISTRICT PLAN SYSTEM ARE APPLIED GUIDED BY DISTRICT PLANS.