Abstract: Experimental setup of long distance and high resolution single-pixel imaging system was set up. Images of natural target were obtained through 34 km outdoors horizontal atmosphere in daylight, about 0.8 m resolution was achieved. The multiple resolution level of Hadamard matrix was used as measurement basis, and owing to 25% compressive sampling and differential measuring by two photon-multiplier tubes, video frame rate of 2 Hz@128128 pixels was achieved with the proposed hardware and fast Walsh transform algorithm. An signal-to-noise ratio(SNR) was defined based on human-computer interaction interface to estimate the qualities of the recovered images. The relationship between image qualities and exposure times were researched. The proposed scheme has the potential application in long distance and high resolution infrared imaging with low cost setup.