Abstract: Planting red dates regards the dwarf culture as main planting patterns in south region of Xinjiang.Low efficiency manual picking is still used in the process of harvesting red dates.A air-suction red dates harvesting machinery was designed based on the Bernoulli principle.Functions and picking efficiency of prototype were tested with the jujube orchards in the south region of Xinjiang as the test points.Experimental results showed that the best wind velocity of straw mouth was 23 ms，average picking efficiency was 182.8 kgh，production efficiency with that machinery was 5.2 times than that with manual picking.