The invention discloses an intelligent measuring and controlling system for a seepage parameter of a drain hole of a dam. The intelligent measuring and controlling system comprises a pressure sensor installed at the bottom of the drain hole and used for measuring a seepage pressure of the drain hole; a flow sensor installed on a flow guide transverse pipe and used for measuring a seepage flow of the drain hole; an electric control valve installed on a seepage water pipe and used for controlling a flow of the seepage water pipe; and a measuring and controlling device installed at a water outlet and connected to the pressure sensor, the flow sensor, the electric control valve and an IPC (Industrial Personal Computer). The intelligent measuring and controlling system for the seepage parameter of the drain hole of the dam can realize an automatic test for the seepage flow and pressure parameters in the drain hole of the dam efficiently.