中文摘要：

本文将影响中国出口的因素分为要素投入和内在约束两个部分。首先构建异质性随机前沿出口模型，然后利用该模型估计了要素投入对于中国出口的影响程度，以及各种制度因素对于出口约束和出口稳定性的作用，并进而估计了出口效率。结果表明：首先，政府支出、基础设施建设、国际直接投资和改革进程的推动都有利于缓解当前的出口内在约束。而后两者则倾向于增加出口的不稳定性；其次，省区之间的出口推动模式存在很大差异，东西部地区的投资推动作用显著，而中部地区的投资对于该地区的出口作用强度稍弱，由此也说明中部地区存在较大的出口潜力。

英文摘要：

Under the background of current export predicament in China, this paper divides the factors that affect China export into two groups： factor input and domestic constraints. First, a heteroscedastic stochastic frontier export model is formulated, then we use it to estimate the effect of the above factors on export, and their influence on export constraints and export consistence. Based on such settlement, export efficiency is defined and calculated to analyze the discrepancy of different provinces in China. The conclusions find that there are some institute constraints in China export, which are distinct deeply in different regions.