Based on the demand theory, obtained rational consumer, when assigns the disbursement, must ask effectiveness to be enormous. In the demand system the sole product demand simultaneously receives price and the gross charge all same type product influence. This research domestic will divide into 5 districts, and the supposition works as when consumer to domestic some local international sightseeing hotel lodging expense, will affect lodging of demand the domestic other local international sightseeing hotel. This research collected 1999 to Taiwan of area people 2007 to the international sightseeing hotel expense the secondary data, the utilization fixed elastic demand system (constant flexibility demand system), established the people model of regarding the domestic international sightseeing hotel lodging demand system. Joins various parameters the seasonal variation condition to have the limiting condition, uses as if the independence return law (seeming unrelated regression) to estimate the people regarding the international sightseeing hotel lodging demand system Discusses various areas the international sightseeing hotel price changes to other areas relations of the interaction. Finally depends on the real diagnosis result to analyze, whether the examination parameter does conform to anticipation of the economic theory. The findings discovered that the demonstration joins demand of system the seasonal variation factor to the material effect, i.e., people regarding international sightseeing hotel lodging demand system remarkable existence seasonal variation effect.
