Multifunctional trunk protection device and producing and using method

The invention discloses a multifunctional trunk protection device. The multifunctional trunk protection device comprises a polyvinyl chloride flat plate film. The polyvinyl chloride flat plate film is provided with round hollows, hollow cones and strip sockets. Strip guide bands are distributed between the strip sockets. The multifunctional trunk protection device is mainly used in fields of (1) Chinese scholar trees, elms, crape myrtles, albizzia, alamos, goldenrain trees, willows, sakuras and greening and timber trees in Rosaceae and Lauraceae, wherein pests and disease damage usually occur in the greening and timber trees, and parts of the greening and timber trees are damaged by coccid, long-horned beetles and aphid; (2) tree species like blueberry trees and michelia susceptible to freezing damage; and (3) Magnolia, alamos, camphor trees and sassafrases susceptible to sunburn. According to multifunctional trunk protection device, the following functions of (1) sterilizing, avoiding bacterial infection and speeding up mechanical damaged wound healing, (2) insecticide, insect prevention and preventing rodents from gnawing barks, and (3) avoiding trunk freezing damage and sunburn can be achieved.