I am a newcomer. Whenever i posted the comment on the blog i found  [Delete] after my posted time.
Could you tell me how can i delete  [Delete] mark?

You cannot delete the "delete" text. It's an action button that allows you to delete your comment. Only you and the owner of the blog see it.

may i ask one more question ?  my posted comment  disappears when i  visit the blog next time.Have I made a mistake in anything? Because  im a  beginner and not good at English, its hard for me to understand the system. Thank you for your help.

Hmmm. That's strange. That should not be happening. If it displays your comment it means the comment has been saved. Are you posting comments to blogs or photos? Make sure NOT to click on the [Delete] text.

i tried to poste message  to a blog twice. However i might click on the [Delete] text  last time as you
pointed out. i will try it again carefully. thank you very much .
i know you like Detective Konan,the japanese manga character.