Introduction. Intense exercise causes muscle pain or delayed onset muscle soreness. The most common symptoms are decreased muscle strength, muscle tenderness, and swelling. These symptoms are limited to physical activity in daily life. Treatment for muscle soreness after exercise is essential and easy to administer for example by applying superficial heat. The herbal compress is a traditional treatment in Thailand that has been used for relieving pain. Aim of Study. This study was to develop and determine the effect of an electric herbal hot compress pad on perceived muscle soreness sensation, muscle strength, range of motion after intense exercise induced muscle soreness. Material and Methods. There were 24 participants, aged 18-24 years old. The participants randomly received: (i) an herbal hot compress ball; or (ii) an electric herbal hot compress pad. Both groups received the respective treatments 24, 48, and 72 h after exercise for 40 min once a day. Muscle soreness was induced by Winged cycling using weight of 0.076 kg for 30 min. The perceived muscle soreness, muscle strength, and range of motion were measured immediately at the baseline, after intense exercise, and after treatment at 24, 48, and 72 h. Results. The results showed that all the variables were increased compared to baseline measurements after 30-min intense exercise. This indicates muscle damage. Furthermore, they showed that muscle soreness sensations decreased 72 h after treatment, with slight changes in muscle strength and range of motion after treatment. However, in the immediate application of heat in both groups there were no significantly different changes. Conclusions. This pilot study indicated that pain relief efficacy with the use of the electric herbal compress pad for delayed onset muscle soreness was not different from that of an herbal compress ball. However, a large long-term follow-up study on the therapy is needed.