Disclosed is a planting cup. A first contraction part (22) and a second contraction part (24) connected to one another are arranged below a cylinder wall body (10), wherein the area of a lower opening of the first contraction part (22) is less than the area of an upper opening of the first contraction part (22), the second contraction part (24) is located below the first contraction part (22), and the area of a lower opening of the second contraction part (24) is less than the area of an upper opening of the second contraction part (24), such that the lower part of a cylinder wall is in the shape of an inclined stair, wherein same facilitates the stacking of planting cups and reduces the contact area when the planting cups are stacked together, thereby realizing the mechanical separation of the planting cups, reducing the workload of production staff, and improving the working efficiency. A contraction part (20) is provided with a long hole (262) and a short hole (264), such that channels for the root system
