Abstract: Plot seeding machinery at home and abroad related information retrieval model and related research were made.Types of seeding machinery in breeding field at present in our country village were summarized.Ditching device that effected seeding quality greatly in the process of plot seeder was introduced.Use of status quo，advantages and disadvantages of different types of furrow opener were discussed from different test requirements of each test stage，working principle of breeding and planting machinery，applicability of matched furrow opener etc.Prediction and suggestion of research and improvement direction of plot planting machinery ditching device were made.