The I Don't Know How She Does It star, who is mother to 8-year-old son James Wilkie and 2-year-old twin daughters Tabitha and Loretta, revealed that being a parent has forced her to set more time aside for her relationship with Broderick.
"Kids can really distract you from your relationship," Parker explained in a new interview with The Daily Telegraph.
"Maybe in good ways and bad ways. It's important to have all eyes on all parts of the relationship."
However, Parker went on to say that while the couple have their share of issues, they always manage to pull through as they keep their eyes on the bigger picture.
"We've been together for twenty years and you have good days, you have decent days, and you have bad days. That's a marriage. That's a relationship. That's a friendship, even - relationships outside the marriage run the same course," she explained.
"If you're in it for the long haul and you want meaningful relationships, you are going to go through lots of different periods."
Parker previously said that she and Broderick have already begun planning how their lives will be after their children have grown up.
> Sarah Jessica Parker "proud" of Matthew Broderick marriage
Watch Sarah Jessica Parker in the trailer for I Don't Know How She Does It below: