A cold water discharge apparatus comprising a dicharge flow channel, an outlet port, a cold water discharge flow channel and a cold water discharge port, said cold water discharge apparatus being configured to discharge hot water from the discharge flow channel to the outlet port, when feed water is hot water having a temperature equal to or higher than a preset temperature, and the cold water discharge apparatus configured to discharge cold water from the cold water discharge flow channel, which is branched off from the discharge flow channel, to the cold water discharge port when feed water is cold having a temperature below the preset temperature, the cold water discharge apparatus further comprising: a first switching valve body, which is temperature-sensitive, provided at a branching section of the discharge flow channel and the cold water discharge flow channel, wherein the first switching valve body is configured to open the cold water discharge flow channel by expanding/contracting in a pipe axis direction in response to a change in temperature of feed water when the feed water is cold water while keeping the discharge flow channel constantly open, the first switching valve body serves to close the cold water discharge flow channel when the feed water is hot water; the cold water discharge apparatus being characterised by further comprising a second switching valve body, which is a diaphragm type valve, provided so as to extend between the discharge flow channel and the cold water discharge flow channel, the second switching valve body being biased by a spring force in a direction to close the discharge flow channel, wherein the second switching valve body can be switched between: a hot water discharge mode, in which the discharge flow channel opens due to pressure caused by flow of the hot water through the discharge flow channel to discharge the hot water to the outlet port; a cold water discharge mode, in which the discharge flow channel closes due to pressure caused by flow of the cold water through the cold water discharge flow channel to discharge the cold water to the cold water discharge port; and a residual water discharge mode, in which the cold water discharge flow channel opens upon being subjected to pressure due to a gravity drop from residual water on a downstream side of the outlet port when the temperature of the residual water in the first switching valve body is below the preset temperature after stopping the flow, thereby allowing the residual water to be discharged through the cold water discharge flow channel. a first switching valve body, which is temperature-sensitive, provided at a branching section of the discharge flow channel and the cold water discharge flow channel, wherein the first switching valve body is configured to open the cold water discharge flow channel by expanding/contracting in a pipe axis direction in response to a change in temperature of feed water when the feed water is cold water while keeping the discharge flow channel constantly open, the first switching valve body serves to close the cold water discharge flow channel when the feed water is hot water; the cold water discharge apparatus being characterised by further comprising a second switching valve body, which is a diaphragm type valve, provided so as to extend between the discharge flow channel and the cold water discharge flow channel, the second switching valve body being biased by a spring force in a direction to close the discharge flow channel, wherein the second switching valve body can be switched between: a hot water discharge mode, in which the discharge flow channel opens due to pressure caused by flow of the hot water through the discharge flow channel to discharge the hot water to the outlet port; a cold water discharge mode, in which the discharge flow channel closes due to pressure caused by flow of the cold water through the cold water discharge flow channel to discharge the cold water to the cold water discharge port; and a residual water discharge mode, in which the cold water discharge flow channel opens upon being subjected to pressure due to a gravity drop from residual water on a downstream side of the outlet port when the temperature of the residual water in the first switching valve body is below the preset temperature after stopping the flow, thereby allowing the residual water to be discharged through the cold water discharge flow channel. a hot water discharge mode, in which the discharge flow channel opens due to pressure caused by flow of the hot water through the discharge flow channel to discharge the hot water to the outlet port; a cold water discharge mode, in which the discharge flow channel closes due to pressure caused by flow of the cold water through the cold water discharge flow channel to discharge the cold water to the cold water discharge port; and a residual water discharge mode, in which the cold water discharge flow channel opens upon being subjected to pressure due to a gravity drop from residual water on a downstream side of the outlet port when the temperature of the residual water in the first switching valve body is below the preset temperature after stopping the flow, thereby allowing the residual water to be discharged through the cold water discharge flow channel.