The invention discloses a body sensing garden lamp based on a novel lamp holder. The garden lamp comprises a controller, a main lamp pole, an auxiliary lamp pole, the lamp holder and a thermal infrared body sensor. The lamp holder comprises a circular frame, a lampshade and a curved surface light-permeable cover. The lampshade comprises an outer shell, an inner shell and an annular connecting plate. A fixed plate is fixed into the inner shell. A circuit board is fixed to the annular fixed plate. A plurality of LED light-emitting units are installed on the circuit board. The circuit board is connected with a heat conduction block. A plurality of cooling fins are connected with the heat conduction block. The outer shell is provided with a gas inlet for connecting a space inside the auxiliarylamp pole with an interlayer space. A frame is provided with a gas outlet channel. The annular connecting plate is provided with a gas outlet for connecting the gas outlet channel with the interlayerspace. A cooling fan is installed in the space inside the auxiliary lamp pole. The garden lamp can sense a human body to be intelligently switched on and off, and air cooling can be realized.