The invention discloses a novel tap and an installation method of the tap. The novel tap comprises a hidden-installed master box, a front cover, a tap and a tap switch, wherein the hidden-installed master box is embedded in a wall body; a cold water inlet pipeline, a hot water inlet pipeline, a cold water outlet pipeline and a hot water outlet pipeline are installed at the lateral part or the bottom or the top of the hidden-installed master box in a penetrating way; the front cover is connected with the hidden-installed master box when the hidden-installed master box is installed; the tap andthe tap switch are connected with the cold water inlet pipeline, the hot water inlet pipeline, the cold water outlet pipeline and the hot water outlet pipeline when the cold water inlet pipeline, thehot water inlet pipeline, the cold water outlet pipeline and the hot water outlet pipeline are installed; and the front cover, the tap and the tap switch are installed and connected into an integrated structure. The inclination of the tap and the tap switch caused by installation errors between the front cover and the tap as well as between the front cover and the tap switch in the process of installation is avoided. In the process of installation, only the front cover and the hidden-installed master box which are integrated need to be installed, thereby simplifying the installation and avoiding the problem that the tap can not be positioned easily due to error occurring when the tap is installed; and meanwhile, the tap can be repaired or replaced simply and conveniently, and the process of construction is simple and quick.