After data entry using epidata, the record is saved. Where is the file saved?

Close. Rec (pay attention to keep the main interface), you can see that the "data processing" button has a down button. Click Data List (one row per record) to view the data you entered. Alternatively, you can click the "Data Export" button to save the data as a file in SPSS or EXcel and SAS formats.

Try it yourself, it should be no problem.