The subject of this thesis is" The Research of Five Learnings(pañca-śīkṣā-padāni) - based on Abhidharma Texts of Earlier Sectarian Buddhism ". The main focus is on the sutras ranging from the Original Buddhism and the earlier Sectarian Buddhism, including Sajyukāgama, Madhyamāgama, Śāriputrābhidharma-śāstra of Sthāvirāḥ and Abhidharma-dharma-skandha pāda,Abhidharma-prakaraṇa—pāda of Sarvāstivādāḥ. With the purpose of providing the readers a accurate understanding and theoretical development of Buddha’s early teaching about the Five Commandments, the writer uses a systematical way to make a analysis and comparison research on those documents. There are 90,000 words in this thesis,which can be devided into 3 parts : 1. The philosophy, theory, the structure and the abhidharmaic analysis of the Five Commandments in Śāriputrābhidharma-śāstra. 2. The relations and comparisons between the Abhidharma-dharma-skandha-pāda and other important treatises of the Sarvāsti-vādin. 3. The abhidharmaic analysis and investigation for the Abhidharma-prakarana-pāda. At last, there is a general conclusion for this thesis and a foreseeable direction for the future advanced research.