The canard wing of J-10 adopts pointed delta wing. This kind of wing has poor lift characteristics, which will inevitably increase the canard trim resistance; On the other hand, the wing with large sweep angle has good stall performance and high stall angle of attack. In order to ensure the maneuverability of the aircraft at high angle of attack, it is reasonable to choose this wing.

In addition, similar to gust and JAS39, the trailing edge of J-10 duck wing stops near the leading edge of the main wing, while the typhoon and lion, which are both duck-shaped, go to two extremes, one is that the distance between the duck wing and the main wing is widened, and the other is that the overlapping area is large. To determine the reasonable position between them, we should not only consider the requirements of balancing, but also weigh the favorable interference of canard flying at high angle of attack on the main wing and the weight of the high-lift effect produced by canard (in canard layout, strengthening one side means weakening the other side). The final decision often requires countless theoretical calculations and experimental debugging, so we amateurs can't make irresponsible remarks about some design details.