Dysmenorrhea is very unpleasant sensation with the presence of painful cramps of uterine origin that occur during menstruation. Prevalence rate of dysmenorrhea is 50% in females’ population. Evidence tells that inactive lifestyle as well as poor diet is main reason of primary dysmenorrheal as well as women who exercise have a reduced incidence of dysmenorrhea. Objectives: To find the effectiveness of high intensity aerobics and pelvic clock exercises in primary dysmenorrhea. Methods: The study design was randomized control trials. Purposive sampling technique was used. Girls aged 17–24 years with regular menstrual cycle and unmarried girls were included. Athletes, married women with gynecological abnormalities were excluded. A structured 8 weeks’ program (3 days in a week, 1hour per day) was given to Group A including set of London bridges (8 mins), Jumping lunges (8 mins), Mountain climbers (8 mins), Quadruped bent knee hip extension (8 mins), Warm up 10 minutes, 25 minutes for high intensity aerobics. Group B were assigned 25 minutes for Pelvic clock exercises (gradually increased during with weeks) performed from 12 to 6 o’clock, as instructed to move from 3 o clock to 9 o clock. Then movement in a clockwise manner from 12 to 3 to 6 to 9 and then back to 12 o’ clock. Outcome measures were calculated by visual analog scale VAS, DASS 21 and self-administered questionnaire for dysmenorrhea symptoms. Results: Both techniques were effective for managing the patients of pain during menstruation, but patients who were treated with high intensity aerobics exercise showed more significant result as compared to another group with p-value < 0.05. Conclusions: High intensity aerobics and Pelvic clock exercises in primary dysmenorrhea, both are effective but high intensity aerobics had given more efficient results