The utility model relates to a precision seed distributor, and belongs to the technical field of seeding equipment. The precision seed distributor is composed of a mounting frame, seed boxes, an uppergate plate, a lower gate plate, a main driving cylinder and an auxiliary driving cylinder, wherein the seed boxes are mounted on the mounting frame at intervals; A seed guide pipe is mounted on the mounting frame below the seed box; A seed distribution rotating shaft is movably mounted on the mounting frame between the seed guide pipe and the seed box through a bearing seat; Driving chain wheelsare fixedly mounted at the two ends of the seed distribution rotating shaft respectively; Two groups of auxiliary driving cylinders and two groups of main driving cylinders are symmetrically and fixedly arranged on the seed distribution rotating shaft; An upper flashboard and a lower flashboard are arranged at the lower end of each seed box in an up-down sliding manner; Guide wheels are respectively arranged at two ends of the upper gate plate and two ends of the lower gate plate. The precision seed distributor is ingenious in design, solves the problems that an existing precision seed distributor is difficult in type changing and inaccurate in seed taking, and meets the requirements of people for precision seeding.