1, red-headed documents are generally in the format for sending formal notifications from top to bottom. The notice consists of four parts: title, sending unit (recipient), text and signature.

2. Different scope of application: Red-headed documents refer to non-legislative documents such as measures, instructions and orders issued by government agencies, which have long been an important starting point for administrative organs at all levels to implement administrative activities. Notices are used to issue laws and regulations, forward official documents of higher authorities, organs at the same level and non-subordinate organs, approve official documents of lower authorities, and require lower authorities to handle a certain matter.