A self-adaptive display method for an image of a mobile terminal, comprising: determining, by a multipoint control terminal, the number K of sub-pictures which are permitted to be displayed by a mobile terminal in a current placement state; and selecting and sending K sub-pictures to the mobile terminal for display, wherein, the determining, by the multipoint control terminal, the number K of sub-pictures which are permitted to be displayed by the mobile terminal in the current placement state comprises: the multipoint control terminal determines the number K of the sub-pictures which are permitted to be displayed by the mobile terminal in the placement state according to the current placement state of the mobile terminal in a multi-point video conference, screen information of the mobile terminal, and resolutions of video images of N conference terminals, wherein, N represents the number of all conference terminals, or the determining, by the multipoint control terminal, the number K of sub-pictures which are permitted to be displayed by the mobile terminal in the current placement state comprises: the multipoint control terminal receives the number K of the sub-pictures which are permitted to be displayed in the current placement state sent by the mobile terminal in a multi-point video conference; the number K of the sub-pictures which are permitted to be displayed in the current placement state sent by the mobile terminal is: the mobile terminal determines the number K of the sub-pictures which are permitted to be displayed in the placement state according to the current placement state of the mobile terminal, screen information of the mobile terminal and resolution of video image of the mobile terminal. determining, by a multipoint control terminal, the number K of sub-pictures which are permitted to be displayed by a mobile terminal in a current placement state; and selecting and sending K sub-pictures to the mobile terminal for display, wherein, the determining, by the multipoint control terminal, the number K of sub-pictures which are permitted to be displayed by the mobile terminal in the current placement state comprises: the multipoint control terminal determines the number K of the sub-pictures which are permitted to be displayed by the mobile terminal in the placement state according to the current placement state of the mobile terminal in a multi-point video conference, screen information of the mobile terminal, and resolutions of video images of N conference terminals, wherein, N represents the number of all conference terminals, or the determining, by the multipoint control terminal, the number K of sub-pictures which are permitted to be displayed by the mobile terminal in the current placement state comprises: the multipoint control terminal receives the number K of the sub-pictures which are permitted to be displayed in the current placement state sent by the mobile terminal in a multi-point video conference; the number K of the sub-pictures which are permitted to be displayed in the current placement state sent by the mobile terminal is: the mobile terminal determines the number K of the sub-pictures which are permitted to be displayed in the placement state according to the current placement state of the mobile terminal, screen information of the mobile terminal and resolution of video image of the mobile terminal.