Du Lu 

What are you using to pre-translate with, Translation Memories or with machine translation?
Did you create the project?

Is it just this 1 project that you are struggling with or is the pre-translate not working against any project / file.
Do you get results from your providers if you are active in a segment?

Often I see this if:

• Translation Memory langues dont support project languages  
• Translation Memory is not enabled when you perform the batch task - Pre Translate 
• Option to Apply automated translation is not enabled

Please can you save the error and attach the fill stack trace to this post so I can try help you further

Thank you

Lyds 

Hi Lydia,

Thanks for your suggestion.

The problem is solved.

I use language weaver plug.

The reason of no result is caused by plug's free quota used up.

But there is no notice.

Hi Lydia,

Thanks for your suggestion.

The problem is solved.

I use language weaver plug.

The reason of no result is caused by plug's free quota used up.

But there is no notice.