The invention relates to a locating and hole digging device for crop planting. The locating and hole digging device comprises a hole digging body (1), a tool rod (3), a tool handle (4) and a plant distance control device (5), wherein a trampling body (2) is arranged above the hole digging body (1); the hole digging body (1) adopts a cone; the trampling body (2) is arranged at the top plane of the hole digging body (1), and is a butterfly disk body; one end of the tool rod (3) is fixed on the trampling body (2); the tool handle (4) is arranged at the other end of the tool rod (3); the plant distance control device (5) is arranged on the side surface of the tool rod (3) and comprises a cross bar (51) and a vertical bar (52); the interval of the vertical bar (52) relative to the tool rod (3) can be adjusted. According to the locating and hole digging device for crop planting, the structure is simple, the efficiency of crop transplantation can be improved, deep planting is achieved, and the quality of crop transplantation is improved.