Borhanoddin Mohaeghegh Termezi is one of the salient features in Islamic mystics and who comprehended the presence of Baha valade balkhi in his youth. He reached the higher degrees of mystics under his support. After the death of Bahaodin, Seyyed took the responsibility of guiding Molana Jalaledin and he guided him to mystic path and the destruction level in a way that he could tolerate the companionship of the king of lovers-Shams Tabrizi. Deep thinking in his education book reveals that he has great thoughts in mystic path and these thoughts made a huge improvement in the thoughts of great men like Molavi and Soltan valad. He is one of the mystics who understand the unity of existence and the regards multiplicity as invalid. Borhanoddin also knows sanctity as heart recognition with which everything can be a sign of God. Beside this, Seyyed Serdan explains about mortification, invocation of God and observing forty days seclusion which is an obvious reason for his maturity in mystics. In this study, after having a short look at the Borhanoddin’ s life path, his most important mystic thoughts will be analyzed.