Property price is a major concern for many Hong Kong People. In the recent years, we saw a phenomenon, the continuous raising of RMB and also the Housing price in Hong Kong. In this paper, we want to examine whether there are positive correlation between the raising property price and the appreciation of RMB. Based some literatures about geographical factor to affect property value, we would determine to use the Northern District as our observation. After almost 2600 transactions from 2009 to 2014 are estimated, we find that higher exchange rate of RMB against HKD and property value of Shen Zhen will significant cause more expensive property value. Moreover, the GDP in Hong Kong is not correlated with property price in this period. It implies that the upward trend of Hong Kong property market is not caused by national income rising of Hong Kong residents.