桌面打开浏览器访问：http://get.adobe.com/cn/flashplayer/。网页会判断操作系统和浏览器并下载 Flash Player（支持Firefox浏览器）。

或者直接下载：
i386系统

wget http://linuxdownload.adobe.com/adobe-release/adobe-release-i386-1.0-1.noarch.rpm
rpm -ivh adobe-release-i386-1.0-1.noarch.rpm
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux
yum install firefox.i386 flash-plugin

x86_64系统

wget http://linuxdownload.adobe.com/adobe-release/adobe-release-x86_64-1.0-1.noarch.rpm
rpm -ivh adobe-release-x86_64-1.0-1.noarch.rpm
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux
yum install firefox.x86_64 flash-plugin

更新 Flash player：

yum update flash-plugin

参考资料：
http://wiki.debian.org.hk/w/Install_Flash_Player_with_YUM