The embodiment of the invention discloses a source file processing method and device, and a source file acquisition method and device. The source file processing method comprises steps of acquiring a compiling source file, wherein the compiling source file comprises a source file name and source file contents; encrypting the source file name and a preset character string according to a first preset encryption algorithm so as to obtain an encryption result, and using an encryption result as a new file name; according to the new file name, generating an encryption key; using the encryption key to encrypt the source file contents according to the second preset encryption algorithm so as to obtain new file contents; and naming the new file contents with a new file name to obtain a new file. According to the embodiment of the invention, a problem that the compiling source file is distorted and is read or distorted after being loaded to a client in a network transmission process is effectively solved and safety of the data of the client is ensured.