A live video broadcasting method, the method being applied to a mobile terminal and comprising: a step of receiving image information sent by smart glasses, the image information being acquired by an image acquisition element arranged on the smart glasses; a step of receiving audio information from the smart glasses, the audio information being acquired by the audio acquisition element connected with the smart glasses; or a step of directly acquiring the audio information acquired by the mobile terminal; a step of synthesizing video information according to the audio information and the image information; a step of sending the video information to a video playing terminal; characterized in that the method further comprises: a step of determining whether the audio information comprises specific audio information matched with a preset control instruction or not, the preset control instruction comprising at least one of a first preset control instruction and a second preset control instruction, wherein the first preset control instruction is configured to control a working state of the image acquisition element or the audio acquisition element and the second preset control instruction is configured to control a transmission state of the video information; and in the case that the audio information comprises the specific audio information, a step of executing the preset control instruction, wherein the step of synthesizing comprises synthesizing the video information from the image information and the audio information except said specific audio information. a step of receiving image information sent by smart glasses, the image information being acquired by an image acquisition element arranged on the smart glasses; a step of receiving audio information from the smart glasses, the audio information being acquired by the audio acquisition element connected with the smart glasses; or a step of directly acquiring the audio information acquired by the mobile terminal; a step of synthesizing video information according to the audio information and the image information; a step of sending the video information to a video playing terminal; characterized in that the method further comprises: a step of determining whether the audio information comprises specific audio information matched with a preset control instruction or not, the preset control instruction comprising at least one of a first preset control instruction and a second preset control instruction, wherein the first preset control instruction is configured to control a working state of the image acquisition element or the audio acquisition element and the second preset control instruction is configured to control a transmission state of the video information; and in the case that the audio information comprises the specific audio information, a step of executing the preset control instruction, wherein the step of synthesizing comprises synthesizing the video information from the image information and the audio information except said specific audio information. a step of determining whether the audio information comprises specific audio information matched with a preset control instruction or not, the preset control instruction comprising at least one of a first preset control instruction and a second preset control instruction, wherein the first preset control instruction is configured to control a working state of the image acquisition element or the audio acquisition element and the second preset control instruction is configured to control a transmission state of the video information; and in the case that the audio information comprises the specific audio information, a step of executing the preset control instruction, wherein the step of synthesizing comprises synthesizing the video information from the image information and the audio information except said specific audio information.