This study titled correlation between child abuse and social behaviour of school-age children from low-income families in Kaduna and Kano states, Nigeria was aimed to study the relationship between child abuse and social behavior of School-age Children from low-income families in Kaduna and Kano States. In line with the above four specific objectives, four research questions were raised and four Null hypotheses were formulated. Descriptive survey research design using structured questionnaire was employed for the study. The population of the study was thirty five thousand two hundred and nine (35,209) parents, the School-age Children was three million thirty five thousand five hundred and twenty five (3,35525). In three thousand seven hundred and seventy (3,770) public Primary Schools in Kaduna and Kano States, Nigeria. Multi-stage sampling technique was used to select the sample size of three hundred and eighty eight (388) children and parents for the study. Pilot study was conducted at Funtua local government of Katsina State and Dutse local government of Jigawa State, to determine the reliability of the designed instrument. Collected data were analyzed using frequencies and percentages for demographic variables of the respondents. Frequency and mean statistics was employed to analyze the research questions, while the four Null hypotheses were tested using Pearson Product Moment Correlation Statistic at 0.05 alpha level of significance. The findings revealed that Children and parent responses showed that Low-income families were more involved in child abuse in the States, because they don't have enough money to cater for their children's needs. Also abused children have poor social skills resulting to poor social behaviour and poor interpersonal relationship between their parents and other adult in the society. The researcher concluded that child abuse among the low-income families was attributed to many factors which include; lack of adequate nutrition, good shelter, comfortable clothing, sound education and medical care necessary for good living. Recommendations were made which include, as low-income constitute a powerful factor that has relationship with child abuse; Parents are hereby encouraged to have more employment opportunities in different skill acquisition to improve on their low income level in the family. Parents should dedicate more time to the socialization and training of their children, so that to improve on their good social behaviour necessary for individual happy life.