最後，本文建議投資者可針對特定的時間點，對於不同的產業進行相關的投資，以獲得投資上的利益。 This research uses Per Capita GDP、interest rate、birth rate、death rate、national income、unemployment rate and exchange rate to explore the impact of domestic market（food、clothes、houses and cars）.This study also uses the time factors to explain whether the demand does have hierarchy.
The conclusion indicates that Per Capita GDP、death rate and national income affect the expense of the food；Per Capita GDP、death rate、national income and unemployment rate affect the expense of clothes；Per Capita GDP、birth rate and national income affect the expense of the houses；Per Capita GDP and national income affect the expense of cars. Besides, the time factors also explain the demand does have hierarchy.
Finally, we suggest that investors could put money into corrected industries be aimed at specific time to get benefit.
