Abstract: In order to explore pine needles as a high value-added material for grow bags, the physicochemical properties of pine needles and coconut coir were determined and analyzed. The results showed that the total porosity of pine needles was 88.64%, water holding capacity was 293%, pH value was 6.12, the electrical conductivity was 1.10 mS/cm, indicating that both factors were within excellent soilless cultivation substrate scope. Electronic conductivity value of pine needles was 59.8 cmol/kg, slightly less than that of coconut coir (67.1 cmol/kg). Content of mineral elements of pine needles were richer than that of coconut coir, it could provide nutrients for the plants to a certain extent. The acid, alkaline and saline buffering capacity of pine needles were 0.0689, 0.1033 and 0.1202 mol/kg, respectively, and those of the coconut coir were 0.0567, 0.0842 and 0.1394 mol/kg, respectively, they had similar buffering capacity. This study provided not only a reference for soilless cultivation and planting application of grow bags, but also a new way for using pine needle as renewable forest resource.