An atomizer, comprising: a main body, wherein the main body is provided with an atomizing assembly and two conductive terminals, the two conductive terminals are electrically connected with the atomizing assembly at one end, and are electrically connected with an external power supply at the other end; the main body is further provided with two conductive strips, and the two conductive strips are electrically connected with the two conductive terminals, respectively, and are both capable of being electrically connected with the external power supply; wherein the conductive terminals comprise a contact portion and a connecting portion, one end of the connecting portion is connected with the contact portion, the other end is electrically connected with the atomizing assembly; each conductive strip is provided with a first through hole and is sleeved at the connecting portion through the first through hole, and is fit to the contact portion; wherein each conductive strip is provided with an avoidance groove, the first through hole is located at a bottom wall of the avoidance groove, the connecting portion passes through the first through hole and is electrically connected with the atomizing assembly, and the contact portion is placed in the avoidance groove; wherein the depth of the avoidance groove is equal to the thickness of the contact portion; wherein the main body comprises a base and a housing, the base is provided with a receiving groove at one end, and covers the housing at the other end and forms a receiving chamber with the housing, the atomizing assembly is connected with the base and placed in the receiving chamber; the bottom wall of the receiving groove is provided with a second through hole concentric with the first through hole, the conductive strip is placed in the receiving groove, and the conductive terminal passes through the first through hole and the second through hole sequentially and is electrically connected with the atomizing assembly; wherein the bottom wall of the receiving groove is further provided with an air inlet, the two conductive strips are located at both sides of the air inlet, respectively, and the atomizing assembly is provided with an air flow passage communicated with the air inlet; wherein an outer wall of the connecting portion is provided with at least one oil-sealing rim at intervals circumferentially, and the oil-sealing rim is abutted against the inner wall of the second through hole; and wherein the oil-sealing rim has a truncated cone shape, and the diameter of the oil-sealing rim decreases in a direction away from the contact portion. a main body, wherein the main body is provided with an atomizing assembly and two conductive terminals, the two conductive terminals are electrically connected with the atomizing assembly at one end, and are electrically connected with an external power supply at the other end; the main body is further provided with two conductive strips, and the two conductive strips are electrically connected with the two conductive terminals, respectively, and are both capable of being electrically connected with the external power supply; wherein the conductive terminals comprise a contact portion and a connecting portion, one end of the connecting portion is connected with the contact portion, the other end is electrically connected with the atomizing assembly; each conductive strip is provided with a first through hole and is sleeved at the connecting portion through the first through hole, and is fit to the contact portion; wherein each conductive strip is provided with an avoidance groove, the first through hole is located at a bottom wall of the avoidance groove, the connecting portion passes through the first through hole and is electrically connected with the atomizing assembly, and the contact portion is placed in the avoidance groove; wherein the depth of the avoidance groove is equal to the thickness of the contact portion; wherein the main body comprises a base and a housing, the base is provided with a receiving groove at one end, and covers the housing at the other end and forms a receiving chamber with the housing, the atomizing assembly is connected with the base and placed in the receiving chamber; the bottom wall of the receiving groove is provided with a second through hole concentric with the first through hole, the conductive strip is placed in the receiving groove, and the conductive terminal passes through the first through hole and the second through hole sequentially and is electrically connected with the atomizing assembly; wherein the bottom wall of the receiving groove is further provided with an air inlet, the two conductive strips are located at both sides of the air inlet, respectively, and the atomizing assembly is provided with an air flow passage communicated with the air inlet; wherein an outer wall of the connecting portion is provided with at least one oil-sealing rim at intervals circumferentially, and the oil-sealing rim is abutted against the inner wall of the second through hole; and wherein the oil-sealing rim has a truncated cone shape, and the diameter of the oil-sealing rim decreases in a direction away from the contact portion.