The invention discloses a multifunctional digital printing machine. The multifunctional digital printing machine comprises a feeding rack, a trolley moving motor, an ink stack mechanism, a main printing machine frame, a main driving motor, a Ricoh spray head, an ink box, an automatic positioning mechanism, a suction nozzle, a feeding lifting motor, a positioning support beam, a feeding lifting platform, a material beating mechanism, a feeding motor, a positioning plate, a material grabbing lifting cylinder, a thickness measuring mechanism, a material grabbing lifting device, a guide rail beam, a printing board clamp, a trolley device, a synchronous belt, synchronous belt wheels, a main transmission shaft, supporting beams, an electric control cabinet, fans, a cross beam lifting device, an eccentric wheel, a feeding shell, a main printing machine frame shell, a printing main control panel, an ink stack cleaning control device, a keyboard bracket and a feeding control panel. The multifunctional digital printing machine has the beneficial effects that a flexible plate does not need to be made, document operation is easy, a source-color spray printing technology is used, machine cleaning is not needed, no abandoned flexible plate is generated, a computer is used for color matching, saving is achieved through the computer, operation is easy, spray printing is conducted as needed, time and labor are saved, and the production efficiency is high.