1. The Points in Argument 2. The Main Forms of the Real Estate Transaction and the Application of the Law 3. A Legal Obligation to Explain the Important Things as a Real Estate Trader (1)The Extent of a Real Estate Trader's Obligation to Explain (1) Authority to Seller or Lender (2) Registered Right (3) Restrictions Imposed by Low (4) Quality of the Real Estate (5) Environment of the Real Estate (6) Tax on the Real Estate Transaction (2) The Legal Responsibility for a Breach of Obligation (1) Real Estate Dealer (2) Real Estate Broker (3) The Relation between Dealer and Broker (3) The Extent Applied the law of Real Estate Transaction (1) Non-trader of Real Estate (2) Selling Forest or Field (4) The Time to Explain the Important Things 4. Application of the Consumer's Contract Law