The invention discloses a hinging-frame ejection type single-person convertible badminton court. The hinging-frame ejection type single-person convertible badminton court comprises a small badminton court and a large badminton, wherein a speed detecting mechanism is arranged at one side of the small badminton court; a rotary-disc badminton court is arranged at one side of the speed detecting mechanism; a blanking groove is arranged between the speed detecting mechanism and the rotary-disc badminton; the rotary-disc badminton court comprises a rotary disc; the outer side of the circumference ofthe rotary disc is connected with two badminton net walls and two tennis net walls; the badminton net walls and the tennis net walls are arranged at an 90-degree interval; a plurality of badminton net boards are spliced into the badminton net walls. The hinging-frame ejection type single-person convertible badminton court disclosed by the invention has the following beneficial effects that single-person playing practice is realized, the hitting force and the returning force are same and equal, but different in position, so that the randomness of the practice is ensured, and the badminton andtennis practices can be finished in one area.