The invention discloses a plastic particle recycling system, and belongs to the field of plastic recycling. According to the plastic particle recycling system, during recycling, waste plastic is crushed and then cleaned, cleaned plastic particles with water are put into an inner drying cylinder, the inner drying cylinder rotates, on one hand, when the inner drying cylinder rotates, under the action of centrifugal force, water adhered to the plastic particles is thrown into an outer adhering wrapping shell to be in contact with air overflowing filler, and the air overflowing filler generates air and reversely permeates into the inner drying cylinder, so that the plastic particles are loosened to a certain extent, and the overflow of damp and hot air generated by heating inside the plastic particles is accelerated; and on the other hand, when the inner drying cylinder rotates, water capsules mutually collide with each other and are broken, internal water overflows and diffuses along with rotation, so that the air production speed and the air production rate in the outer adhering wrapping shell are remarkably increased, drying is accelerated, and compared with the prior art, the system has the advantage that recovery efficiency is greatly improved.