一、改革开放以来城镇居民收入差距扩大的基本情况 （一）城镇居民收入差距迅速扩大 改革开放以来，我国城镇居民的收入水平有了大幅度的提高，但收入差距也愈益扩大。1999年城镇居民人均可支配收入5854元，比1978年增长了16倍，比1990年增长了2．9倍，扣除物价因素的影响，实 I. Basic Information about the Widening Income Gap between Urban Residents since the Reform and Opening Up (I) Rapid Increase in Income Gap among Urban Residents Since the reform and opening up, the income level of urban residents in our country has greatly increased, but the income gap has also been expanding. In 1999, per capita disposable income of urban residents was 5,854 yuan, an increase of 16 times that of 1978 and an increase of 2.9 times that of 1990. Excluding the impact of price factors,