The invention relates to a many-core processor and methods of visiting space of the many-core processor and main core of the many-core processor, wherein the methods of visiting space of the many-core processor comprise that the main core builds page table buffering to subordinate cores, wherein the page table buffering is used for storing the page tables; the subordinate cores send service requirements to the main core; a one-to-one correspondence relationship is provided between the main core which loads the page tables in the page table buffering and the subordinate cores which send the service requirements to a process page table; the main core acquires a required page table entry from the process page table and starts page table mapping and then a physical address is generated; the main core visits physical space of the subordinate cores through the physical address. The many-core processor and methods of visiting space of the many-core processor and main core of the many-core processor effectively shields complexity of visiting hyperspace of heterogeneous many-core environment and achieves accurate and efficient visiting subordinate core spaces of the heterogeneous many-core environment.