The new generation of wireless communication has to meet the requirements in the Internet of Things with diversified business.The network slices can logically isolate the network

and each network works in a similar class of business.Therefore

the business differences between different slices is large

and the required resources are also different.In order to solve the problem of resource allocation among slices and provide better service for users

this paper proposes a fair proportion of resource allocation scheme based on Quality of Service（QoS）

which weighs the fairness and user’s requirements in each slice.The simulation results are compared with the proportional fairness and the maximum load-keeping ratio.The results show that the new algorithm can achieve higher user spectrum efficiency while guaranteeing the fairness.