The invention relates to a mold electric-switch intelligent biomass forming machine comprising a humidity sensor, a temperature controller, heating wires, a material delivery hopper, a material conveyor belt, a stirring device, a granulation machine, a mold-changing disc, and a mold-changing disc motor. With the humidity sensor, biomass powder water content can be subjected to real-time measuring, such that the temperature controller can change heating current of the heating wires of the conveyor belt, such that the water content of the biomass powder can be adjusted. With the stirring device, biomass powder can be continuously stirred, such that caking is prevented, and forming machine normal work can be ensured. A plurality of molds with different hole sizes and through hole depths are arranged on the mold-changing disc. The mold-changing disc motor controls the mold-changing disc such that the mold-changing disc rotates, such that mounting of different flat molds can be realized according to requirements. According to the biomass forming machine provided by the invention, through realizing flat mold switch, water content control, and biomass powder stirring, forming machine normal work can be ensured. Biomass formed particles can be prepared according to requirements, such that adaptability and versatility of the application of the forming machine are improved.