Fault tolerant quantum computing is an important area of research focused on making quantum computers more reliable and practical. Quantum systems are highly sensitive to environmental disturbances, which can introduce errors during calculations. To address this challenge, researchers have developed fault tolerant methods that detect and correct errors without disrupting quantum operations. These approaches combine advanced error correction codes, logical qubits, and specialized hardware designs to improve computational accuracy. As quantum technology continues to evolve, fault tolerant computing is expected to play a key role in enabling large scale applications across science, healthcare, finance, and many other fields.