Ⅰ.The cause of unbalanced international payment
Since the implementation of reformand opening-up from the end of 1970’s,due to the economic development and thegradually improved reliance on import,China used to witness the situation thatexchange supply could not meet the de-mand,foreign exchange became a kindof resource in shortage.Therefore,wehad to try every way to promote the ex-Port and increase the exchange reserve,itwas an important economic task duringthat period.