Anemochory is the main dispersal mode of Acer plants and has close relationship with seed germination, but the specific mechanism has not been clear. In this study, the samara of nine maple trees that distributed in Changbai Mountain were dropped in still air to simulate their descent velocity and horizontal dispersal distance under different wind speeds, and seed germination at the horizontal dispersal distance. Correlation and difference between morphological characteristics of samara and descent velocity, horizontal dispersal distance, germination rate were analyzed. The results showed that:(1) the samara length, samara width, and wing area of nine maple trees were negatively correlated with descent velocity and horizontal dispersal distance. The samara morphology traits were not the best index for classification of anemochory species, but the wing load could better reflect the wind dispersal ability. (2) The descent vertical was negatively correlated with the horizontal dispersal distance, indicating the smaller the descent velocity was, the longer a samara stays in the air, the farther it can be blown by the wind, and the longer the horizontal dispersal distance was. (3) A. ukurunduense, with the slowest descent velocity, has the farthest horizontal dispersal distance, while A. triflorum, with the fastest descent velocity, has the shortest horizontal dispersal distance, but the strong wind is helpful to improve the dispersal ability. (4) The seed germination rate decreased with the increase of the horizontal dispersal distance. The results can provide a scientific basis for the anemochory mechanism of samara and the response mechanism that seed germination to horizontal dispersal distance, and also provide a reference for the theoretical study of its population regeneration.