The study investigates the thoughts of Buddha's wisdom in the light of prajñā, tathāgatagarbha, and vijñānamātra thoughts. At the same time, their elucidations of emphasis are revealed. Moreover, the fundamental meaning of prajñā thoughts is also learned from the fact that the basic ideas of Buddha's wisdom followed by tathāgatagarbha and vijñānamātra thoughts. However, the two thoughts discussed Buddha's wisdom from different angles and used varied terms due to complying with the transition of thoughts in different eras.