Due to the health-promoting benefits of the compounds found in medicinal and aromatic plants, the interest in phytopharmaceuticals and natural cosmetics has been steadily increasing over the last decades. The use of chamomile flowers has expanded due to its well-known effect on various diseases such as fighting anxiety and depression, anti-inflammatory properties, insomnia treatment. About 20,000 hectares of chamomile flower farms are grown all over the world and in Iran in most parts of the country. The high quality of manual harvesting is not hidden from anyone, but the amount of harvesting flower per hour is very low (3-5 kg ??h -1 ). Design and manufacturing a suitable machine can harvest high-quality flowers and greatly help to develop its planting. During the design of chamomile harvesters, two methods of picking-comb and picking-rotor have been used. The device must be designed and built for small land. On the other hand, the costs should be suitable for low-income farmers. To improve the quality of the harvest, different combs in length, the width of fingers, and the width of gaps were used to estimate the resistance and length of the stems. Also, a platform was made to harvest the flowers and was installed on the arms of a three-wheeled alfalfa machine. Two axles are located inside the roller bearings, which was powered by two-pulley connected to a motor drive and a belt in the opposite direction of the forward speed. The quality of harvest depends on comb parameters and stem picking resistance. An Instron Testing Machine was used to measure stem picking tensile force and measuring picking energy to remove the flowers. The basis of various designs was based on increasing the quality of the flowers and reducing losses during harvest. Samples of the stems were randomly obtained from a chamomile farm. The average moisture content of 3 complete specimens, flowers with stems, and only chamomile flowers were 83.19, 82.71, and 83.01%, respectively. The mean picking force for stems at the speeds of 10, 15, 25, and 35 mm/min were 4.22,3.71, 3.07, and 2.89 Newton, respectively for 20 random samples. After design, manufacturing, and assembling the parts on the chassis, a stationary test was done to evaluate its performance during harvesting. Insitu evaluation showed problems at a high rotational speed. Field evaluation was investigated to verify the performance of platforme. Two problems were observed first, the forward speed was not commensurate with the rotational speed and minor adjustment the finger comb was done. Next, the wheel power transmission system and the carousel were modified. The picking performance of the flowers was satisfactory in release gears. Keywords: picking force, carousel, harvesting comb, head