The invention discloses a multifunctional elastic rubber blanket and a manufacturing method thereof. The manufacturing method of the multifunctional elastic rubber blanket includes the following steps that 1, bottom-layer particles are manufactured; 2, a bottom layer is manufactured; 3, surface-layer particles are manufactured; 4, a surface layer is manufactured; 5, the surface layer and the bottom layer are attached. Patterns on the multifunctional elastic rubber blanket are rich, no aging or deformation is likely to happen, weather fastness is good, the multifunctional elastic rubber blanket is resistant to water, oil, acid and alkali and high temperature, retardant to flaming, long in service life, environmentally friendly and free of formaldehyde and radiation, antibacterial ingredients are contained, and attachment and breeding of bacteria can be restrained. The multifunctional elastic rubber blanket is low in cost and good in elasticity, and can be widely used for various crowded public places such as medical care environments, educational environments, offices, the hotel industry, the retail industry and light industry departments.