Abstract: Quantum computer is a new type of physical device for the operation, storage and processing of quantum information, which is based on quantum properties, such as superposition and entanglement. By running quantum algorithms based on quantum hardware, quantum computers are capable to solve certain complex computational problems much faster and more efficiently than classical computers. Hence, quantum computers play a crucial role in the future science and technology development, international strategic competition and other aspects. Trapped ion is one of the main physical platforms to construct quantum computer. This paper introduces the development and trends of trapped ion quantum computers. Firstly, by reviewing the historical development of trapped ion quantum computing, this paper reviewed the principle, status, and trend of trapped ion quantum computers. Then, the paper focuses on the research frontier of distributed trapped ion quantum computer, and analyzes technical topics, such as ion-photon entanglement, distributed quantum computing, and quantum internet based on trapped-ions. Further, the development of the industry of trapped ion quantum computing is discussed, including core patents, research institutions, enterprises, and financing, as well as marketing and ecology. Finally, the paper provides suggestions for scientific research and industrial development of trapped ion quantum computers.

Key words: Ion Trap, Quantum Computer, Distributed Quantum Computing, Quantum Internet, Ion-Photon Entanglement