Provided are a networking system for data transmission in a host supporting quality assurance of hyper-precision communication services (HPSs), and more particularly, to a networking method and apparatus in a host of a networking system supporting quality assurance of HPSs. The networking method includes receiving a request for an HPS from a client, checking a descriptor of the HPS in a quality-of-service (QoS) profile of the HPS requested by the client, applying a performance parameter, and selecting an optimal algorithm suitable for a type of the HPS requested by the client.