Abstract: In this paper, a frequency selective surface with the properties of low-frequency absorption and high-frequency transmission is designed and experimentally verified. The absorbing FSS loaded with lumped resistance is firstly proposed, and then a layer of FSS with the spectral filtering characteristics of low-frequency reflection and high-frequency transmission is also introduced here on the below. The two layers of FSSs work together contributing the selective absorption and transmission of electromagnetic waves for specific frequency bands, which can be seen as a good achievement for the application of absorption-transmission integrated FSS. Approximate full wave simulation of the proposed structure is carried out by using CST Microwave Studio software. Simulation results show that the absorption efficiency of the composite FSS in the low frequency (7.5-9.5 GHz) range is greater than 90% , the transmittance is higher than 70% at high frequency (15.5-19 GHz), and the maximum transmittance is 80% at 18.1 GHz. As a proof, a FSS sample is fabricated by circuit board printing technology with the overall size of 305 mm′305 mm and contains 30′30 basic units. The experimental results show that the measurements are in good agreement with the simulations which further verifies the rationality of our paper. Meanwhile, our proposed FSS has advantages of thin thickness, good absorbing and wide wave width, which can be seen as great application in the field of new stealthy radome.