The invention discloses a multifunctional throw pillow containing food-grade foamed plastic particles. The multifunctional throw pillow comprises a throw pillow body and the food-grade foamed plastic particles filled in the throw pillow body, wherein the throw pillow body is provided with a silica gel sucking disc and is internally provided with a Bluetooth loudspeaker as well as a rechargeable battery and a switch which are electrically connected with the Bluetooth loudspeaker, wherein the food-grade foamed plastic particles are prepared from the following components in parts by weight: 90 to 100 parts of styrene, 2 to 3 parts of talcum powder, 2 to 5 parts of an antibacterial anti-mite agent, 0.3 to 0.8 part of food-grade liquid silica gel, 0.1 to 0.2 part of polysiloxane quaternary ammonium salt, 0.2 to 0.3 part of coco-glucoside, 0.1 to 0.2 part of sodium tripolyphosphate, 0.4 to 0.6 part of an initiator benzoyl peroxide, 100 to 120 parts of soft water, 8 to 9 parts of a foaming agent pentane and 0.1 to 0.2 part of an antioxidant. Compared with the prior art, the multifunctional throw pillow is integrated with the multiple functions such as a Bluetooth loudspeaker function, a charging function and good supporting stationarity for mobile phones, is good in hand feeling and high in comfort level, and has the advantages of high flexibility, gas permeability, shock resistance, bacterial resistance, mite resistance, chemical stability, high and low temperature resistance and the like.