A method and an apparatus for controlling a network service of an Internet of things terminal, and a related storage medium are disclosed. In the method, after receiving a uniform resource locator (URL) sent by an Internet of things terminal in an authentication process, a network management device obtains a manufacturer usage descriptions (MUD) file based on the URL, and parses the MUD file to obtain content of at least one field included in the MUD file, where the MUD file includes at least one of: a first-type field or a second-type field, the first-type field is used to describe a security isolation requirement, and the second-type field is used to describe a quality assurance requirement.