Mysql service take cpu high usage

[Kanagaraj]

Dear Friends,
the following commends take high cpu usage on our centos 6.5 server

13326 mysql 58.7 % /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --log-e ...

/usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
13326 mysql 20 0 819m 31m 6528 S 80.8 0.2 4:07.59 mysqld
3790 apache 20 0 391m 67m 5596 S 7.9 0.4 0:33.42 httpd
18970 apache 20 0 401m 78m 4728 S 5.9 0.5 0:32.29 httpd
8072 apache 20 0 401m 79m 4744 S 3.9 0.5 0:28.62 httpd
3950 apache 20 0 397m 73m 5596 S 2.0 0.5 0:32.02 httpd
1 root 20 0 19232 1508 1228 S 0.0 0.0 0:02.98 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root RT 0 0 0 0 S 0.0 0.0 0:00.70 migration/0
4 root 20 0 0 0 0 S 0.0 0.0 0:00.02 ksoftirqd/0

Please guide me to solve this error

note : this will happens on last 4 days only

Kanagaraj