A code execution method and device, as well as a rendering apparatus are provided. A specific solution includes: receiving an initialization instruction from an execution engine, the initialization instruction being acquired by loading target codes through the execution engine; sending a registration instruction to a registration component according to the initialization instruction, to create a wrapper object required for executing the target codes; compiling the target codes to acquire an execution codes corresponding to the target codes, according to a mapping relationship between the wrapper object and native codes of an operating system; and sending the execution codes to the execution engine to execute the execution codes. The execution engine can mainly control the code execution process, thereby improving a code execution efficiency.