There are not many reasons for the lack of table content and large memory: there are many blank tables; There are hidden objects and so on. Because Excel forms will record all the contents of previous operations, and then the forms will become megabytes, and such forms will respond slowly when they are opened or operated, which will bring inconvenience to work. If you want to reduce or slim down the table, the operation method is as follows:

The first solution: delete the hidden objects in the table. Ctrl+G positioning, select the positioning object, and delete the found object.

The second method: delete blank cells. Ctrl+End can go directly to the last cell in the table. If you find many blank cells, just delete and save them.