The invention discloses a neutron source, and the neutron source comprises an ion source, a low-energy transmission segment, an RFQ accelerator, a high-energy transmission segment, a radio frequency power source, a target station device, and a control system. The ion source is used for generating ions. The low-energy transmission segment is used for adjusting an ion beam. The RFQ accelerator is used for increasing the speed of the ion beam, so as to enable the energy of each ion to be within the range from 0.1MeV to 10MeV. The high-energy transmission segment is used for adjusting the ion beam after speed increase. The radio frequency power source is used for providing a radio frequency signal for the RFQ accelerator. The target station device is used for generating neutrons and leading the neutrons out. The control system is used for controlling the ion source, the low-energy transmission segment, the RFQ accelerator, the high-energy transmission segment, and the target station device. The neutron source can employ the independent RFQ accelerator, is small in size, is small in occupied space, is high in neutron yield, and is convenient for production and installation.