Hi partner,
1.If you mean your workflow has been triggered duplicated, you could go to System Jobs to monitor the process and find the reason.
2.If you mean the actions in this workflow duplicated, you could try the following steps.
a). Check if your conditions could be conflict.
b). Use "If...else" for your different conditions in workflow, then if one condition has been met and the action has been triggered,the other will not be met and triggered.
BTW, could you kindly share more information about your issue with English?
Regards,
Leo