Abstract: The effect of lightweight aggregate type, particle size, content on the compressive strength, thermal conductivity, water absorption, drying shrinkage of the lightweight aggregate porous concrete were studied. Compared with lightweight aggregate concrete, the results showed that, the compressive strength of lightweight aggregate is increased with the increase of the cylinder pressure strength of the lightweight aggregate porous concrete. The light aggregate with smaller particle size distributes uniformly can increase the compressive strength. Appropriate lightweight aggregate concrete can increase the compressive strength of lightweight aggregate concrete and reduce the thermal conductivity of porous concrete. The reasonable use of lightweight aggregate can reduce the water absorption and drying shrinkage of the porous concrete and improve the durability of lightweight aggregate concrete.