The invention discloses an LED lamp with the high safety coefficient. The LED lamp comprises a shell body and a mounting shell arranged on the shell body; an extension part is arranged on the mounting shell; a through hole is formed in the extension part; a mounting pipe used for wrapping an external circuit is detachably connected to the though hole in the extension part; a fixing part is arranged between the mounting pipe and the extension part, and the scheme adopts a novel mechanical structure. The LED lamp with the high safety coefficient has the advantages and effects that the though hole in the extension part is connected to the mounting pipe, the mounting pipe is used for wrapping the external circuit, the mounting pipe is fixed through the fixing part, the external circuit can be isolated, and therefore the safety performance can be improved; and the mounting pipe can be disassembled under the effect of the fixing part, the external circuit can be conveniently arranged inside the mounting pipe in a penetrated mode in the installation process and then is arranged inside the extension part in a penetrated mode so that convenient installation can be realized, then fixing is carried out under the effect of the fixing part so that the stability of the mounting pipe can be kept, and therefore the stable isolation function can be realized.