Abstract: Carica papaya is a major type of fruit that is been consumed for relaxation or medicinal purpose, and this plant is made of different parts which seen to have different health benefit. The study is aimed to evaluate the effect of aqueous extract of Carica papaya seed and peels (back) on the testes and sperm morphology of male albino wistar rats. 35 adult male wistar rats weighing 180g divided into seven (7) groups A-G were used for the study and the research lasted for 4weeks. Group A served as the control, while B, C, D for the seed and E, F, G for the peels at 100mg/kg, 200mg/kg and 400mg/kg for both plant part.