The invention relates to a control method and a control device of a video application. The method is characterized by comprising the following steps: (1) monitoring light intensity in front of a screen; (2) acquiring an instruction for entering a first page in the video application; (3) calculating a brightness value of the first page according to a mean value of the light intensity; (4) accordingto the obtained brightness value, setting the brightness of the first page. The invention provides the control method and the control device of the video application, through continuously monitoringthe light intensity in front of the screen, calculating the brightness value of a new page according to the mean value of the light intensity while entering the new page and setting the brightness, adjustment to the intensity values of each page in the video application is realized; and compared with the prior art, the method and the device are more soft to brightness adjustment, and can effectively prevent abrupt change of the brightness of the pages, thus, use comfort level of the users is improved.