A content delivery method and a content update method for a vehicle network associated with an Internet of Vehicles are disclosed. The content delivery method for an Internet of Vehicles includes dividing the plurality of onboard units into clusters based on interest content information of the plurality of onboard units. Each of the clusters includes at least one cluster-head onboard unit. The method includes receiving, by the cluster-head onboard unit, an interest content access request of an requestor onboard unit in the cluster, searching for the interest content corresponding to the interest content access request in the Internet of Vehicles and sending the searched interest content to the requestor onboard unit.