He offered his thanks to mothers serving in the armed forces, the mothers of those serving and mothers with spouses serving.
"Your unwavering dedication and support strengthens our entire nation," President Trump said.
The event in the East Room came two days ahead of Mother's Day.
Trump touted the money his administration has budgeted for the military.
"We had a very depleted military. You know it better than I did. And now it's raring," he said.