Emptiness is one of the Buddha’s teachings and it’s very interesting in Theravada and Mahayana Buddhism. Simply, before I knew that emptiness is empty only. Indeed, the conception of it should be the same but actually it’s not. Frankly, it’s known in Mahayana Buddhism after the death of the Buddha. Since the Buddha time, it wasn’t discussing much but later on, it’s becoming a big topic in Mahayana Buddhism. This is the reason that I have researched about it and how are they different in opening meaning, especially the conception of emptiness in Theravada Buddhism and Mahayana Buddhism. I now will give you the comparison of it in details.