A display control method, comprising: acquiring periodically a facial image of a user; calculating coordinates of a reference point according to the facial image; and processing the coordinates of the reference point and preset coordinates and performing an operation; characterized in that: wherein when the reference point is one or two center points of pupils of the user in the facial image, the step of calculating coordinates of the reference point according to the facial image comprises steps of: acquiring an RGB component image of the facial image, and selecting a red component image (S501 and S502), wherein a RGB ratio for facial skin of the user is R-255, G-204, B-102, and a RGB ratio for pupil center of the user is R-0, G-0, B-0; obtaining a reverse color diagram of the red component image by subtracting 255 from component values of respective points of the red component image; acquiring coordinates of peak values in an X axis direction and in a Y axis direction by performing accumulation on the reverse color diagram in the X axis direction and in the Y axis direction respectively; and determining the coordinates of the reference point according to the coordinates of the peak values. acquiring periodically a facial image of a user; calculating coordinates of a reference point according to the facial image; and processing the coordinates of the reference point and preset coordinates and performing an operation; characterized in that: wherein when the reference point is one or two center points of pupils of the user in the facial image, the step of calculating coordinates of the reference point according to the facial image comprises steps of: acquiring an RGB component image of the facial image, and selecting a red component image (S501 and S502), wherein a RGB ratio for facial skin of the user is R-255, G-204, B-102, and a RGB ratio for pupil center of the user is R-0, G-0, B-0; obtaining a reverse color diagram of the red component image by subtracting 255 from component values of respective points of the red component image; acquiring coordinates of peak values in an X axis direction and in a Y axis direction by performing accumulation on the reverse color diagram in the X axis direction and in the Y axis direction respectively; and determining the coordinates of the reference point according to the coordinates of the peak values. wherein when the reference point is one or two center points of pupils of the user in the facial image, the step of calculating coordinates of the reference point according to the facial image comprises steps of: acquiring an RGB component image of the facial image, and selecting a red component image (S501 and S502), wherein a RGB ratio for facial skin of the user is R-255, G-204, B-102, and a RGB ratio for pupil center of the user is R-0, G-0, B-0; obtaining a reverse color diagram of the red component image by subtracting 255 from component values of respective points of the red component image; acquiring coordinates of peak values in an X axis direction and in a Y axis direction by performing accumulation on the reverse color diagram in the X axis direction and in the Y axis direction respectively; and determining the coordinates of the reference point according to the coordinates of the peak values. acquiring an RGB component image of the facial image, and selecting a red component image (S501 and S502), wherein a RGB ratio for facial skin of the user is R-255, G-204, B-102, and a RGB ratio for pupil center of the user is R-0, G-0, B-0; obtaining a reverse color diagram of the red component image by subtracting 255 from component values of respective points of the red component image; acquiring coordinates of peak values in an X axis direction and in a Y axis direction by performing accumulation on the reverse color diagram in the X axis direction and in the Y axis direction respectively; and determining the coordinates of the reference point according to the coordinates of the peak values.