In order to get suspension velocity of cut medicago falcate components, some experiments on suspension velocity of cut medicago falcate components from 3 periods (podding period, flowering period and branching period) were carried out. DFPF-25 suspension velocity instrument was used to test the suspension velocity in the experiments. The results showed that the maximum suspension velocity in podding period, flowering period and branching period were 4.238, 3.736 and 2.653 m·s^-1, respectively; The suspension velocity of different ingredients in the same period was overlapped, so it was hard to separate them in airflow meaning classifying the cut medicago falcate components only with airflow was not feasilde. The leaves-removed experiment revealed that the ratio between the change rate of suspension velocity of cut medicago falcate components and the mass ratio of leaves were 1.225-3.745, and it meant that leaves contribute more to suspension velocity of cut medicago falcate components than stalks. The research can provide reference for the design of gathering device and classifier of medicago falcate harvester.