The invention discloses a method for planting seedlings and afforesting in a sand land of an arid region by using sand land shrub mulberry bare-root seedlings. The method comprises the following steps: (1) digging a motor-pumped well and determining an afforesting land; mounting and laying a trickle irrigation facility; (2) preparing nursery stocks before field planting; (3) determining field planting time; (4) preparing a water source before afforesting; (4) carrying out field planting on the nursery stocks; (6) carrying out root promotion measures after planting; (7) carrying out recovering management; and (8) carrying out conventional management. The invention provides a special nursery stock planting device for the method. According to the method for planting the seedlings and afforesting in the sand land of the arid region by using the sand land shrub mulberry bare-root seedlings and the special nursery stock planting device for the method, the time limitation of conventional afforesting is broken through and planting work of one seedling can be finished within seconds; the current-year survival rate of afforesting is up to 95% and the preserving rate of the next year is up to 85%; an afforesting procedure is optimized and an afforesting step is simplified, so that a seedling planting and afforesting process of the sand land shrub mulberry bare-root seedlings is simplified, the afforesting cost is saved; the recovering period is shortened, the survival rate and preserving rate of the nursery stocks are improved and the afforesting effect is relatively good.