A method for configuring a physical random access channel, PRACH, resource, comprising: configuring, by a base station, a currently supported coverage enhancement level and a PRACH resource corresponding to the coverage enhancement level; and transmitting, by the base station to a user equipment, a resource index of the PRACH resource configured for the coverage enhancement level, so that the user equipment acquires the corresponding PRACH resource, and transmits a preamble on the acquired PRACH resource, wherein the PRACH resource comprises a time-domain resource, and a resource configuration information of the time-domain resource comprises at least one of: a preamble format, a density of enhanced transmission opportunities of a preamble, a transmission opportunity of a preamble for an enhanced transmission at a density, or a quantity of repetitions for each enhanced transmission of a preamble; and wherein the base station transmits, to the user equipment, a resource index of a time-domain resource configured for the coverage enhancement level, wherein each index is corresponding to the resource configuration information of one time-domain resource; wherein the base station configures the quantity of repetitions for each enhanced transmission of the preamble, and the base station further configures a quantity of subframe numbers or a subframe number, wherein the subframe number is used to transmit the preamble in each radio frame, and the subframe number that is used to transmit the preamble in each radio frame is the same as or is different from a resource configuration configured for usage of a non-coverage enhancement level, so that after receiving the resource index of the time-domain resource configured for the coverage enhancement level by the base station, the user equipment queries for the quantity of subframe numbers or the subframe number, wherein the subframe number is used to transmit the preamble in each radio frame, and the quantity or the subframe number is corresponding to the resource index; or so that after receiving the resource index of the time-domain resource configured for the coverage enhancement level by the base station, the user equipment queries for the quantity, corresponding to the resource index, of subframe numbers that are used to transmit the preamble in each radio frame, and after receiving a resource index configured for a resource at the non-coverage enhancement level by the base station, the user equipment queries for a subframe number that is used to transmit the preamble in each radio frame and that is corresponding to the resource index configured for the resource at the non-coverage enhancement level. configuring, by a base station, a currently supported coverage enhancement level and a PRACH resource corresponding to the coverage enhancement level; and transmitting, by the base station to a user equipment, a resource index of the PRACH resource configured for the coverage enhancement level, so that the user equipment acquires the corresponding PRACH resource, and transmits a preamble on the acquired PRACH resource, wherein the PRACH resource comprises a time-domain resource, and a resource configuration information of the time-domain resource comprises at least one of: a preamble format, a density of enhanced transmission opportunities of a preamble, a transmission opportunity of a preamble for an enhanced transmission at a density, or a quantity of repetitions for each enhanced transmission of a preamble; and wherein the base station transmits, to the user equipment, a resource index of a time-domain resource configured for the coverage enhancement level, wherein each index is corresponding to the resource configuration information of one time-domain resource; wherein the base station configures the quantity of repetitions for each enhanced transmission of the preamble, and the base station further configures a quantity of subframe numbers or a subframe number, wherein the subframe number is used to transmit the preamble in each radio frame, and the subframe number that is used to transmit the preamble in each radio frame is the same as or is different from a resource configuration configured for usage of a non-coverage enhancement level, so that after receiving the resource index of the time-domain resource configured for the coverage enhancement level by the base station, the user equipment queries for the quantity of subframe numbers or the subframe number, wherein the subframe number is used to transmit the preamble in each radio frame, and the quantity or the subframe number is corresponding to the resource index; or so that after receiving the resource index of the time-domain resource configured for the coverage enhancement level by the base station, the user equipment queries for the quantity, corresponding to the resource index, of subframe numbers that are used to transmit the preamble in each radio frame, and after receiving a resource index configured for a resource at the non-coverage enhancement level by the base station, the user equipment queries for a subframe number that is used to transmit the preamble in each radio frame and that is corresponding to the resource index configured for the resource at the non-coverage enhancement level.