The soft x‐ray tube with the aluminum anode, for photoelectron spectroscopy with a cylindrical electron spectrograph, has been constructed and tested. The construction permits 20 mm distance between the tube anode and the sample. The testing anode voltage was 5 kV and anode currents 2.5, 5, and 7.5 mA. The stability of the tube was satisfactory. During the test of 5.5h for each current the contamination of the anode surface, caused by the oil from the diffusion pump, decreased the intensity of the tube 10–20%.