Lands are not uniform in salt, so irrigation is essential. However, reclaimed lands are not supplied with electricity smoothly, so there are many restrictions on watering. Also, crops produced in the open field require much labor and time during the irrigation. Therefore an appropriate an irrigation system is needed. Solar energy can measure the amount of solar radiation so that it can function as a solar sensor. Therefore, it can be used in various fields in agriculture. Therefore, the development of irrigation system using solar panels in the open field will significantly affect the product quality and labor efficiency. Cyperus rotundus is a perennial medicinal crop growing in China, Korea and India. It helps with analgesic and antipyretic effects. Peucedanum japonicum are perennial plant. It is used for medicinal crops and is known to be good for crick and paralysis. They have been selected from reclaimed land because of the increase in price and a suitable growing environment. Therefore, the purpose of this study is to develop an irrigation system, and to find suitable growing conditions. The first experiment set up a watering system in reclaimed land. A water pump was used to raise water from agricultural water, and a water tank was placed on 2?meter structure. It is intended for watering by gravity. When the sun rises, and if the solar panel’s voltage is 13V or higher, it is considered sunny. And the irrigation time is set according to the data number of 13V or more for 10 minutes. When the water level is 100%, the solenoid valve opens and starts irrigation, and when it reaches 0%, the irrigation stops, and the valve is locked. Therefore, by configuring hardware and software with this logic, it was confirmed that the motor, the sensor and the valve in operation according to the system. In the second experiment, Cyperus rotundus and Peucedanum japonicum were selected. They were divided into mulching and non-mulchling, and transplanted with the distances of 20, 30, and 40cm. Both of them showed good growth in the mulching area, and Cyperus rotundus showed the best quality at 40cm intervals, and 40cm was the most suitable. Because it showed no difference in production among the plant distance treatments. Peucedanum japonicum showed good growth at 40cm, but there was no significant difference between treatments. and production per unit area was significantly higher at 20cm. Therefore, it could be judged that it is best to grow Peucedanum japonicum at 20cm. As a result, the application of the solar panel irrigation system in an open field can reduce labor costs and improve plant production. In addition, it is thought that the famers could be expected to increase their profits as production increases of Cyperus rotundus and Peucedanum japonicum in reclaimed land.