A method for accessing an entry in a translation lookaside buffer, TLB, wherein the entry comprises at least one combination entry, and the combination entry comprises a virtual huge page number, a bit vector field, and a physical huge page number, wherein the virtual huge page number is an identifier of N consecutive virtual pages, the bit vector field comprises N bits, the N bits are in a one-to-one correspondence with the N consecutive virtual pages, the N bits are used to identify a page table existence status of the N consecutive virtual pages, respectively, and the physical huge page number is an identifier of N consecutive physical pages corresponding to the N consecutive virtual pages; and the method comprises: receiving a virtual address, and calculating a virtual huge page number of the virtual address and an offset of a virtual page corresponding to the virtual address in a virtual huge page, wherein the virtual huge page number of the virtual address is obtained by rounding a quotient obtained after a virtual page number of the virtual address is divided by N; the offset of the virtual page corresponding to the virtual address in the virtual huge page is obtained by finding a remainder obtained after the virtual page number of the virtual address is divided by N; and N is an integer greater than 1; determining whether the virtual huge page number of the virtual address is the same as the virtual huge page number of the combination entry comprised in the TLB, and determining whether a value of a bit, corresponding to the virtual page corresponding to the virtual address, in the bit vector field of the combination entry is a predetermined value; and if both determining results are yes, determining that the physical page number corresponding to the virtual address is the sum of the product of the physical huge page number of the combination entry and N and the offset of the virtual page corresponding to the virtual address in the virtual huge page. receiving a virtual address, and calculating a virtual huge page number of the virtual address and an offset of a virtual page corresponding to the virtual address in a virtual huge page, wherein the virtual huge page number of the virtual address is obtained by rounding a quotient obtained after a virtual page number of the virtual address is divided by N; the offset of the virtual page corresponding to the virtual address in the virtual huge page is obtained by finding a remainder obtained after the virtual page number of the virtual address is divided by N; and N is an integer greater than 1; determining whether the virtual huge page number of the virtual address is the same as the virtual huge page number of the combination entry comprised in the TLB, and determining whether a value of a bit, corresponding to the virtual page corresponding to the virtual address, in the bit vector field of the combination entry is a predetermined value; and if both determining results are yes, determining that the physical page number corresponding to the virtual address is the sum of the product of the physical huge page number of the combination entry and N and the offset of the virtual page corresponding to the virtual address in the virtual huge page.