A tillage mechanism for loosening the media in groove was developed. Researchers re-equipped a commericalized small cultivator to fit the dimensions of groove in greenhouse. The design includes support wheels, guide wheels, paddles and other auxiliary structures, so that the cultivator can manipulate forward momentum which generated by axis rotation to prompt the equipment moving forward operation without any additional assistant power supply. The specifications of the groove plow cultivator is designed with 600 mm(L) x 420 mm(Wx 540 mm(H) and total body weight is 13.5 kg . The test results indicated that this cultivator apply for loosening the groove media is 6 times faster than by manual operation, and the efficiency for crushing aggregated medium is improved up to 13.77%. The developed groove tillage is proved to save working time and working efficiency.