Abstract: As higheoad growing in number increasingly of blilding scale and amount in our country，the water and soil erosion also becomes more serious along the road line day by day．The water and soil erosion is the most important environmental problem that is made by highway engineering．This article elaborate the feature of water and soil erosion，the reasons of water and soil erosion and a series of harmful effects that are aroused by them in the highway engineering in details,at last make a brief introduction to the control means of water and soil erosion．

Key words: highway engineering, water and soil erosion, control technique

摘要： 随着我国公路建设规模和数量的13趋增多，公路沿线的水土流失也13渐严重起来，水土流失是公路工程引起的最主要的环境问题．本文详细阐述了公路工程中水土流失的特点，造成水土流失的原因，以及由此引起的一系列不良影响，最后，对水土流失的防治思路做了简要介绍．

关键词: 公路工程, 水土流失, 防治