The invention relates to a brown rice germination machine. The brown rice germination machine comprises a water tank, a heater, a temperature sensor, an atomizer, an air feeding device, an ozone generator, a first valve, a second valve, a first air inlet pipe, a second air inlet pipe, an air inlet header pipe, a germinative box, an exhausting device, a water drain pipe, a power supply module and a control system. The air feeding device is used for feeding air and water vapor generated by the atomizer to the germinative box, the ozone generator is used for feeding ozone to the germinative box, the germinative box has a rice container structure, which can be used for enabling brown rice to be in thorough and uniform contact with the water vapor and the air, and is provided with an exhaust opening communicating with the exhausting device and a drainage opening located at the bottom, and the control system is electrically connected with the heater, the temperature sensor, the atomizer, the air feeding device, the ozone generator, the first valve, the second valve, a motor, the exhausting device and the power supply module. According to the brown rice germination machine, the operation is simple, and germinated brown rice which is safe to eat can be obtained by users 20 to 24 hours after start-up through only filling up the water tank and filling in washed brown rice. The invention further relates to a brown rice germination method.