The question of the paper focused on Shahid Hasan Baqeri`s character and activities during Islamic revolution and holy defense. The question was studied analytically and on the basis of available documents and evidences. As understood by the paper, Shahid Baqeri was qualified with notable properties with regard to revolution and character. Characteristically viewed, ikhlas, the first time prayer, bravery, jihadist character, simple manner of life may be regarded as his bold properties. Regarding his activities during Islamic revolution, one may refer to his activities at University, his revolutionary part during his soldiering in Pahlavi regime and escaping from garrison, membership in Jomhuri newspaper and Sepah-e Pasdaran. And again, in holy defense, he acted successfully as commander in military opperations of breaking Susangerd siege, Imam Mahdi (aj), Thamen-ul-A`emmah, Tariq-ul-Qods, Tangeh Chazzabeh, Fath-ol-Mobin, Bayt-ul-Muqaddas, Ramazan, Moslem ibn Aqil and Moharram.