HTML代码：

<div class="useful-links">
            <ul>
                <li>
                    <a href="">
                        <img src="images/icon_jzxz.png">
                        <span>就诊须知</span> 
                    </a>
                </li>
                <li>
                    <a href="">
                        <img src="images/icon_jylc.png">
                        <span>就医流程</span>
                    </a>
                </li>
                <li>
                    <a href="">
                        <img src="images/icon_zjjs.png">
                        <span>专家介绍</span>
                    </a>
                </li>
                <li>
                    <a href="">
                        <img src="images/icon_ksjs.png">
                        <span>科室介绍</span>
                    </a>
                </li>
                <li>
                    <a href="">
                        <img src="images/icon_ybjy.png">
                        <span>医保就医</span>
                    </a>
                </li>
                <li>
                    <a href="">
                        <img src="images/icon_jktj.png">
                        <span>健康体检</span>
                    </a>
                </li>
            </ul>
        </div>

CSS代码：

.content .useful-links{
    width: 906px;
    height: 148px;
    margin: 0 auto;
    background-color: orange;
}
.content .useful-links ul li{
    width: 106px;
    float: left;
    margin-right: 54px;
}
.content .useful-links ul li span{
    display: block;
    text-align: center;
}
.content .useful-links ul li:last-child{
    margin-right: 0;
}

显示效果截图：