An air bubble method and apparatus for slope landscaping by injecting compost containing water, animal fertilizer and Terra-Control to a cut-out area are provided to increase germination rate and growth rate of plants and the survival rate of aerobic plants. An air bubble method for slope landscaping consists of the steps of: generating air bubbles by mixing water, animal fertilizer and Terra-Control; obtaining compost by mixing the mixed liquid and planting soil; and injecting the compost at high pressure to a cut-out area. An air bubble apparatus(10) for slope landscaping contains: a liquid tank; a bubble mixing device(20) with an eddy-current generating part(25); a compost supply device(30); an injection nozzle(40); and a compressor. The eddy-current generating part has a shaft(25a), impeller(25b) and motor(25c).본 발명은 법면조경을 위한 버블공법 및 그 장치를 개시한다. 법면조경을 위한 버블공법은 물과 액체비료 및 테라콘트롤을 혼합하여 혼합액을 제조하는 혼합액 제조단계와, 상기 혼합액에 무화된 기포들이 혼합되도록 하는 기포 발생단계와, 상기 기포가 혼합된 혼합액과 식생토를 혼합하여 배합토를 제조하는 단계와, 기 배합토를 절결지에 고압 분사하는 배합토 분사단계를 포함한다.