A method and a system for network resource management, a network device and a computer-readable storage medium. The method for network resource management may include: acquiring, by a Network Function Virtualization Orchestrator (NFVO) module, a Network Service Descriptor (NSD) and/or a Virtualized Network Function Descriptor (VNFD) from an Operation Support System (OSS) module, wherein the VNFD includes the description of virtual machine resources and container resources; and performing, by a Network Function Management and Orchestration (MANO) system and according to a life cycle deployment policy of an NS or VNF, a life cycle management operation on the NS or VNF in one of a virtual machine mode, a container mode and a hybrid orchestration mode.