Abstract: Taking agronomic requirements and harvesting technology of forage grass seed harvest as starting point，development overview of forage grass seed harvesters at home and abroad was introduced and technical characteristics of typical models were listed.Problems of forage grass seed harvester in China were analyzed，such as low technical level，large grass seed loss，low cleanliness，poor adaptability and reliability，low efficiency and intelligence level.Development trend of forage grass seed harvester toward high quality，high technical level，high efficiency，high reliability，high clarity，low loss rate and combined harvest was put forward.It provides reference for research and development of forage grass seed harvester in China.