Although the growth rate drops in early 2014，economic fundamental improved. Confidence of firm and consumer resumed，employment increased，real estate rebounded，personal disposal income and household wealth strengthened，drag from federal fiscal restraint alleviated and endogenous growth became obvious. Looking forward to 2015，the prospect of the US economy is optimistic. Inflation expectation change little，wage growth remain tepid，gains in wealth and income are supporting consumer spending and economic growth，investment move on recovery，net export and government expenditure may neutral. Uncertainties to stable growth include the growth slowdown worldwide，primary product inflation and the possibility of debt crisis.