The invention relates to a multifunctional seed breeding box, which comprises an inner barrel (1), an outer barrel (2), a box body (3), a box cover (19), an ozone generator (9), a control panel, a stirring rod (4), a motor (6), a far infrared heating heat insulation layer (11), a digital temperature sensor (8), an electric heating rod (7), a sprayer (17), an electric valve module (10), an ozone generator (9) and a MCU (micro control unit), wherein the inner barrel (1), the outer barrel (2) and the box body (3) are sequentially assembly from inside to outside, and the control panel, the digital temperature sensor (8), the motor (6), the ozone generator (9), the electric valve module (10) and the far infrared heating heat insulation layer (11) are respectively and electrically connected with the MCU. The multifunctional seed breeding box has five major functions including 1, seed impurity rinsing; 2, seed surface detoxification and sterilization; 3, high-temperature seed soaking; 4, proper temperature pregermination, wherein the temperature can be automatically regulated, and the seed pregermination is prompted; and 5, seed coating.