A code hot-update method and terminal are provided. The method includes: code to be hot-updated is translated into first-type intermediate code, wherein the first-type intermediate code is compiled by using a compiler of a target-type operating system; the first-type intermediate code is translated into bytecode to be run, wherein the bytecode to be run is interpreted by an interpreter of the target-type operating system; and the bytecode to be run is interpreted by using the interpreter to hot-update the code to be hot-updated.