A network slice creation method, comprising: acquiring (S102) slice demand information of a to-be-created network slice; determining (S104), according to the slice demand information, at least one to-be-created network slice subnet corresponding to the to-be-created network slice, and determining slice subnet demand information of each to-be-created network slice subnet according to the slice demand information; determining (S106) deployment description information of the each to-be-created network slice subnet according to the slice subnet demand information of the each to-be-created network slice subnet; and deploying (S108) the each to-be-created network slice subnet according to the deployment description information of the each to-be-created network slice subnet so as to create the to-be-created network slice; characterized in that , the slice demand information comprises slice function information and slice performance information; and wherein the determining (S104), according to the slice demand information, the at least one to-be-created network slice subnet corresponding to the to-be-created network slice and determining the slice subnet demand information of the each to-be-created network slice subnet according to the slice demand information comprises: determining, according to a first mapping relation and the slice function information of the to-be-created network slice, the at least one to-be-created network slice subnet corresponding to the to-be-created network slice, and decomposing the slice function information and the slice performance information onto the at least one to-be-created network slice subnet according to a second mapping relation to form the slice subnet demand information of the each to-be-created network slice subnet. acquiring (S102) slice demand information of a to-be-created network slice; determining (S104), according to the slice demand information, at least one to-be-created network slice subnet corresponding to the to-be-created network slice, and determining slice subnet demand information of each to-be-created network slice subnet according to the slice demand information; determining (S106) deployment description information of the each to-be-created network slice subnet according to the slice subnet demand information of the each to-be-created network slice subnet; and deploying (S108) the each to-be-created network slice subnet according to the deployment description information of the each to-be-created network slice subnet so as to create the to-be-created network slice; characterized in that , the slice demand information comprises slice function information and slice performance information; and wherein the determining (S104), according to the slice demand information, the at least one to-be-created network slice subnet corresponding to the to-be-created network slice and determining the slice subnet demand information of the each to-be-created network slice subnet according to the slice demand information comprises: determining, according to a first mapping relation and the slice function information of the to-be-created network slice, the at least one to-be-created network slice subnet corresponding to the to-be-created network slice, and decomposing the slice function information and the slice performance information onto the at least one to-be-created network slice subnet according to a second mapping relation to form the slice subnet demand information of the each to-be-created network slice subnet. <EOS>