The objective of this project was to develop a automatic potting machine for ornamental flowers in order to replace the current manual operation with improve efficiency. Preliminary results showed that our automatic potting machine was efficient and was applicable to plastic soft pots of 3 1/2” diameter. The successful rate for potting was 98% and the working capacity of this machine was 2,700 pots per hour which was 3 times over that of manual operation. Moreover, the use of the potting machine substantially improved working conditions in the field and avoided laborious manual planting operation. The cost analysis of the machinery usage revealed that the total cost was NT$ 1,235 per ten thousand pots which included NT$ 256 of depreciation, NT$ 27 of maintenance, NT$ 68 of interest, NT$ 29 of electricity cost and NT$ 855 of wages, the application of the automatic potting machine saves NT$ 565 per ten thousand pots, that is equivalent to a saving of NT$ 242,950 per year The effect of reducing labor time and operation cost by using the developed automatic potting machine is significant.