Rebirth, although difficult to understand, is a doctrine taught by round religious schools of thought in the Eastern world over two and a half millennia. However, there was no any religious school discussed the ways to good rebirth until the enlightenment of the Buddha, since then this secret has been revealed. This thesis is, therefore, an attempt to study the way to good rebirth under three major objectives: 1) to explore the origin of rebirth concept, 2) to explain the doctrine of rebirth in Buddhism, and 3) to analyze the way to good rebirth in Buddhism. This research is about analyzing the way to good rebirth from the view point of Theravāda Buddhism. It is found that why were we born? We were born for not to be reborn again. Normally, we may hope for the next life. But according to the Buddha, we should try the way not to be born again.