She is the daughter of Gou Muu, the magical cow king. After
she first met with Son Goku, she had vowed to marry him when she grows up. The
two of them subsequently meet again in a match in a Budoukai. After Goku's
dramatic battle with Piccolo, the two of them got married, ending Dragon Ball.
They subsequently had a very talented son called Gohan. Chi Chi was extremely
protective of her son and had always wanted him to become a scholar, making him
study academics whenever she gets the chance. Her dream was finally realized 10
years after the defeat of Majin Buu and Gohan does indeed become a scholar.