An electronic device comprising: a display; a communication circuit; a control circuit; and a memory electrically connected to the control circuit, wherein the memory stores instructions enabling the control circuit to: display, on the display of the electronic device, a content on a first layer; and based on an execution of a sharing function between the electronic device and an external device: display, on the display of the electronic device, an icon associated with controlling of the sharing function, the icon being displayed on a second layer that is different from the first layer, and transmit in a streaming mode, to the external device, data associated with the first layer including the content for simultaneously displaying on a display of the external device, without transmitting data associated with the second layer including the icon, wherein the control circuit is further configured to change the icon to a floating state based on a user input, wherein, when the icon is in the floating state, the icon is movable on the display based on a further user input. a display; a communication circuit; a control circuit; and a memory electrically connected to the control circuit, wherein the memory stores instructions enabling the control circuit to: display, on the display of the electronic device, a content on a first layer; and based on an execution of a sharing function between the electronic device and an external device: display, on the display of the electronic device, an icon associated with controlling of the sharing function, the icon being displayed on a second layer that is different from the first layer, and transmit in a streaming mode, to the external device, data associated with the first layer including the content for simultaneously displaying on a display of the external device, without transmitting data associated with the second layer including the icon, wherein the control circuit is further configured to change the icon to a floating state based on a user input, wherein, when the icon is in the floating state, the icon is movable on the display based on a further user input. display, on the display of the electronic device, a content on a first layer; and based on an execution of a sharing function between the electronic device and an external device: display, on the display of the electronic device, an icon associated with controlling of the sharing function, the icon being displayed on a second layer that is different from the first layer, and transmit in a streaming mode, to the external device, data associated with the first layer including the content for simultaneously displaying on a display of the external device, without transmitting data associated with the second layer including the icon, wherein the control circuit is further configured to change the icon to a floating state based on a user input, wherein, when the icon is in the floating state, the icon is movable on the display based on a further user input. display, on the display of the electronic device, an icon associated with controlling of the sharing function, the icon being displayed on a second layer that is different from the first layer, and transmit in a streaming mode, to the external device, data associated with the first layer including the content for simultaneously displaying on a display of the external device, without transmitting data associated with the second layer including the icon, wherein the control circuit is further configured to change the icon to a floating state based on a user input, wherein, when the icon is in the floating state, the icon is movable on the display based on a further user input.