Sorry for answering in English because we're not offering technical support with other languages. Are you meaning that you encounter the ping spikes or lags?  If then did you try to change a mudfish node based on FAQ - Nodes section for your game item? If you're using the advanced mode, please start with the basic mode.

I'm sorry the comment above were just emotional words.I found mudfish will cut down  the network if the network traffic over a specific value,especially in large-scale boss killing mission.How do I solve it?

Got it.  However I'm not sure how much traffics are transfered in large-scale boss killing mission because amount of traffics could affect this issue.  When I checked your data plan, it's PPT and it doesn't have a speed cap.  So I think it's limited by network bandwidth between your desktop and mudfish node you'd picked. I think you should test other mudfish nodes because its capacity is different depending on nodes.