The invention discloses environment-protecting multifunctional vehicle-mounted fire fighting equipment. The equipment structurally comprises a top supporting frame, a fire extinguisher, a base and a rocking bar, wherein the top supporting frame is arranged right above the base, the rocking bar is movably arranged between the top supporting frame and the base, and the fire extinguisher is arrangedbetween the top supporting frame and the base; and the top supporting frame is composed of a cross rod, a truss, fixing bolts, a placement opening, a flat plate and a fixing block, wherein the flat plate is of a circular structure, and the placement opening is formed in the middle of the flat plate and is used for placing the top end of the fire extinguisher. According to the environment-protecting multifunctional vehicle-mounted fire fighting equipment, when not taking out and used, the fire extinguisher is fixed up and down by the base and the top supporting frame, and the installation is stable; and during taking out, the fire extinguisher and the top supporting frame form a swinging structure swinging from left to right while spring force of a spring is used for ejecting the bottom ofthe fire extinguisher, so that liquid inside the fire extinguisher naturally shakes, and the situation that liquid in the fire extinguisher is uneven, and the liquid cannot be sprayed out is avoided.