An unpowered orchard transporter relied on its own gravity was developed to solve the difficulties of fruits transportation in large slope mountain. The design was mainly composed of adaptive gravity damping device, fast braking apparatus, remotecontrol system, gearbox, cooling fun, carriages, etc. The system can achieve one side of the carriages with fruits driving down in the cement trough or slope at the degrees of 20 to 50 relying on the gravity of fruits in a moderate speed and the other side of the empty carriages driving up the hill. The transporter only requires a storage battery(12 V) to provide the power when the control system makes the fast brake apparatus to work. The transporter can realize reliable barking at any point along the cement trough. Results showed that the transporter kept the temperature of the bark drum between 20 ℃ and 50 ℃ when the carriages was driving at the speed of 0.7 m/s with the maximum load of 1 000 kg. The transporter operated simply, worked reliably and run smoothly with no extra power, which is suitable for the remote large slope mountainous area with energy conservation and environment protection.