//先进去MySQL自带管理库：information_schema   //自己的数据库：dbwww58com_kuchecarlib   //自己的表：t_carmodelparamvalue    mysql> use information_schema;  Database changed  mysql> select data_length,index_length      -> from tables where      -> table_schema='dbwww58com_kuchecarlib'      -> and table_name = 't_carmodelparamvalue';  +-------------+--------------+  | data_length | index_length |  +-------------+--------------+  |   166379520 |    235782144 |  +-------------+--------------+  1 row in set (0.02 sec)    mysql> select concat(round(sum(data_length/1024/1024),2),'MB') as data_length_MB,      -> concat(round(sum(index_length/1024/1024),2),'MB') as index_length_MB      -> from tables where      -> table_schema='dbwww58com_kuchecarlib'      -> and table_name = 't_carmodelparamvalue';  +----------------+-----------------+  | data_length_MB | index_length_MB |  +----------------+-----------------+  | 158.67MB       | 224.86MB        |  +----------------+-----------------+  1 row in set (0.03 sec)

转载：http://blog.csdn.net/partner4java/article/details/7579818