An interference reduction method, comprising: - obtaining a current radio communication frequency of a radio frequency system of an electronic device; and - determining a first operating frequency of a first interface of the electronic device according to the current radio communication frequency, so that the current radio communication frequency is not a multiple of the first operating frequency divided by four; wherein the determining a first operating frequency of a first interface of the electronic device according to the current radio communication frequency comprises: - determining N preset frequencies which are operating frequencies supported by the first interface, with N being a positive integer greater than or equal to 2; - determining N preset interference sets corresponding to the N preset frequencies, respectively, wherein each interference set comprises a corresponding preset frequency divided by four and the multiple frequencies of said preset frequency divided by four; - determining, in the N preset interference sets, a first interference set that has no intersection with the current radio communication frequency; and determining the preset frequency corresponding to said first interference set as the first operating frequency; and wherein the determining N preset frequencies comprises: - selecting N preset frequencies among preset frequencies f1 to fn, wherein the preset frequencies f1 to fn are operating frequencies supported by the first interface, such that an interference intersection band Bf(fc, fd, m) of a pair of frequencies fc and fd selected at random among the N preset frequencies, is not intersecting with an interference intersection band Bf (fe, ff, M) of another pair of frequencies fe and ff selected at random among the N preset frequencies, wherein m is any value of M, M is a quantity of interference intersection bands; wherein the interference intersection band Bf(fc, fd, m) is a series of frequencies fa, fb that satisfy fa∈A1, fb∈A2, and (fa-fb)<b MHz, an interference set of fc being A1, an interference set of fd being A2 and b MHz being not less than half channel bandwidth of the communication standard used by the radio frequency system; wherein the determining, in N preset interference sets, a first interference set that has no intersection with the current radio frequency communication frequency comprises: - determining, as the first interference set, an interference set in the N interference sets that has an intersection with neither the current radio communication frequency nor a frequency set, wherein the radio frequency system includes a primary card and a secondary card, the current radio communication frequency is a current radio communication frequency of a current serving cell of the primary card, and the frequency set is a frequency set of a current serving cell of the secondary card. - obtaining a current radio communication frequency of a radio frequency system of an electronic device; and - determining a first operating frequency of a first interface of the electronic device according to the current radio communication frequency, so that the current radio communication frequency is not a multiple of the first operating frequency divided by four; - determining N preset frequencies which are operating frequencies supported by the first interface, with N being a positive integer greater than or equal to 2; - determining N preset interference sets corresponding to the N preset frequencies, respectively, wherein each interference set comprises a corresponding preset frequency divided by four and the multiple frequencies of said preset frequency divided by four; - determining, in the N preset interference sets, a first interference set that has no intersection with the current radio communication frequency; and - selecting N preset frequencies among preset frequencies f1 to fn, wherein the preset frequencies f1 to fn are operating frequencies supported by the first interface, - determining, as the first interference set, an interference set in the N interference sets that has an intersection with neither the current radio communication frequency nor a frequency set, wherein the radio frequency system includes a primary card and a secondary card, the current radio communication frequency is a current radio communication frequency of a current serving cell of the primary card, and the frequency set is a frequency set of a current serving cell of the secondary card.