The invention relates to a load balancing software architecture based on a multi-core platform and a method therefor, comprising the following content: 1) the multi-core platform and load balancing equipment are taken as framework elements, and a kernel thread is initialized for every network card on the load balancing equipment to be taken as the soft interruption routine of the network card; the kernel threads respectively process input and output of the corresponding network cards, and the kernel threads are independent; 2) an independent channel is set up for the information exchange between every two network card threads, and a group of bidirectional ring-shaped arrays can be set up in each channel and taken as a coupler between the multi-core platform and load balancing equipment; the ring-shaped arrays can maintain a writing point and a reading point and are respectively operated by two threads, so that the information exchange between the threads is not needed to be locked; 3)routing policy of balanced load of a server can be realized in the soft interruption routine of the input of the network card, and all work of an application layer is executed in a link layer. The multithreading lockless software architecture is adopted to realize the balanced load of the server; furthermore, the practice proves that the invention can remarkably improve the performance of the load balancing equipment.