Abstract: In order to promote the utilization of garden green waste and improve the soil quality of the park green land, the research adopts the green waste compost products to ameliorate the soil quality of Beihai park. The soil has been squeezed seriously and its physical and chemical properties are poor, which has seriously hindered the growth of plants. For this situation, there are three treatments, the green waste compost products were added respectively with 25kg/m3, 40kg/m3 and 55kg/m3. After a growing season, the physical and chemical properties of soil bulk density, porosity, pH, organic matter and available nutrient content of the modified soil were analyzed again. The results showed that the soil physical and chemical properties are improved and are suitable for plant growing. The adding amount of 40g/m3 treatment has the best effect, improved soil bulk density reached 1.34g/cm3, pH 8.09 to 8.11, organic matter content increased 2 ~ 3 times for 29.32 to 53.31g/kg and available nutrients from five levels and below to two levels and above of the grading standards for the second national soil nutrient survey.