This paper presents a comprehensive observation on and analysis of the marriage squeeze status since the founding of the People' s Republic of China and its trend in the future and discusses the impact of various demographic factors on the balance of marriage market. The results show that under the double pressures of the drop in fertility rate since 1970s on one hand and the constant rise in sex ratio at birth on the other , the contradiction of marriage squeeze for men which has already existed tends to intensify .It is expected that China would experience serious marriage squeeze for men for several decades after 2010.The transference of the contradiction of marriage squeeze among districts induced by the huge difference in the socio -economic development would be unavoidable and present a bitter threat to the social stability .