The advance of AI has significantly changed many industries, and financial is no exception. The integration of AI into FinTech has changed the financial services and has made them more effective and cheaper, improved decision making and generated a bunch of new solutions. The paper deals with the role of AI in FinTech, considering the advantages and disadvantages and the way of application. Machine learning, natural language processing, and robotic process automation have changed the conventional banking, creating the personalized banking, the fraud detection system, the algorithmic trading, and the credit scoring. In spite of its perspectives, the AI in FinTech also raises the questions about data privacy, regulation, and the ethical side of AI application.