The 4th National and 1st International scientific seminar on taekwondo holds virtually and all the experts of sport and taekwondo sciences from all over the globe can take part. The main focus of the seminar is on challenges and opportunities of taekwondo in the pandemic crisis of corona virus. All the persons interested in subjects such as: physiology , nutrition , motor development, technology and innovations, psychological studies, management and economy in taekwondo can submit their abstracts to secretariat's email, tkdconference@gmail.com, not later than July 31,2020.