The invention relates to a crop planting device, in particular to a Chinese yam planter. The Chinese yam planter comprises a planting pipe body; the crop planting device is characterized in that a planting partition plate is arranged at the lower part of the planting pipe body, water leakage holes are uniformly distributed in the planting partition plate, and several water-air permeation holes areuniformly distributed at the portion, located above the planting partition plate, of the periphery of the planting pipe body. The crop planting device is low in cost, simple in structure and practical, drainage is convenient and smooth, it is guaranteed that planting soil is not hardened, the Chinese yam vertically and downwards grows, is good in growth vigor, and can be harvested through a mechanical device; meanwhile, the crop planting device can be further used for avoiding that the Chinese yam is broken due to friction in the storage and delivery process, later enjoyment is not influenced, and the crop planting device is suitable for being applied and popularized in vast rural areas.