The invention discloses a multifunctional high-intensity illumination car. The multifunctional high-intensity illumination car comprises a car body assembly (1), a telescopic arm (2), a folding arm (3), a high-intensity illumination device assembly (4), a full-power transfer case (5), a generator (6) and a control device (7), wherein a compartment (12) is of a box type structure, a top plate of the compartment (12) is of an opening structure with a top bin door capable of being opened, and the telescopic arm, the folding arm and the high-intensity illumination device assembly are arranged in the compartment; the high-intensity illumination device assembly comprises a lamp seat rotary mechanism (42), a U-shaped supporting frame (43), a pitching mechanism (44) and a lamp seat (45), the lamp seat comprises a housing (451), a high-intensity illumination lamp (452) and a shutter case (453), and the shutter case comprises a shutter drive and a shutter grid plate (4531). The multifunctional high-intensity illumination car can protect the high-intensity illumination device assembly against external damage, can guarantee the service life of the high-intensity illumination lamp, has an anti-explosion function, is reasonable in space utilization, and is convenient to operate.