My baby is 1 month old,i didn't produce enough breastmilk that's why we use formula milk,can i produce enough milk even it's been a month?

Probably not: The brain/breast mechanism that controls breast feeding via the hormone prolactin has probably stopped working after the use of formula this past month.

Yes: You could try to breastfeed or pump 8-12 times a day and that would increase your milk production. You can also talk to your doctor to take a galactogogue like fenugreek to increase your production.