An inflatable kayak, comprising: an inflatable floor having two ends bent upward; two inflatable gunwales; and a reinforcing assembly; wherein the inflatable floor is a drop stitch fabric floor; the two inflatable gunwales are arranged at left and right sides of the inflatable floor, respectively; bottom sides of the inflatable gunwales are connected to the left and right sides of the inflatable floor, respectively; each of the inflatable gunwales has two ends and a middle portion, an upper edge of each of the two ends of the inflatable gunwale is higher than an upper edge of the middle portion of the inflatable gunwale, to allow a prow and a stern of the inflatable kayak to be higher than a middle of the inflatable kayak; and the reinforcing assembly comprises a bottom reinforcing layer, a prow hatchway cover, and a stern hatchway cover; the bottom reinforcing layer is configured to at least cover joints between the inflatable floor and the two inflatable gunwales, a portion of the bottom reinforcing layer is connected with the inflatable floor, and another portion of the bottom reinforcing layer is connected with the inflatable gunwales; the prow hatchway cover is configured to connect the two inflatable gunwales at the prow, and the stern hatchway cover is configured to connect the two inflatable gunwales at the stern, wherein each inflatable gunwale is cylindrical, each inflatable gunwale comprises two side portions and two edge banding strips, edges of one of the two side portions are connected with corresponding edges of the other of the two side portions by the two edge banding strips, and each of the edge banding strips is covered by a first reinforcing strip; and the bottom reinforcing layer is configured to cover a bottom surface of the inflatable floor, and side edges of the bottom reinforcing layer are connected with corresponding outer side surfaces of the inflatable gunwales, wherein the two side portions are butted with each other or connected in an overlapping manner; and a joint between the bottom reinforcing layer and each of the inflatable gunwales is covered by at least another first reinforcing strip, the inflatable kayak further comprises two boat caps and second reinforcing strips, wherein an edge of each of two boat caps is provided with one of the second reinforcing strips; one of the two boat caps is sleeved on the prow, and the other of the two boat caps is sleeved on the stern; and the boat cap located at the prow is connected to the prow hatchway cover, the two inflatable gunwales, and the inflatable floor through the corresponding second reinforcing strip, and the boat cap located at the stern is connected to the stern hatchway cover, the two inflatable gunwales, and the inflatable floor through the corresponding second reinforcing strip. an inflatable floor having two ends bent upward; two inflatable gunwales; and a reinforcing assembly; wherein the inflatable floor is a drop stitch fabric floor; the two inflatable gunwales are arranged at left and right sides of the inflatable floor, respectively; bottom sides of the inflatable gunwales are connected to the left and right sides of the inflatable floor, respectively; each of the inflatable gunwales has two ends and a middle portion, an upper edge of each of the two ends of the inflatable gunwale is higher than an upper edge of the middle portion of the inflatable gunwale, to allow a prow and a stern of the inflatable kayak to be higher than a middle of the inflatable kayak; and the reinforcing assembly comprises a bottom reinforcing layer, a prow hatchway cover, and a stern hatchway cover; the bottom reinforcing layer is configured to at least cover joints between the inflatable floor and the two inflatable gunwales, a portion of the bottom reinforcing layer is connected with the inflatable floor, and another portion of the bottom reinforcing layer is connected with the inflatable gunwales; the prow hatchway cover is configured to connect the two inflatable gunwales at the prow, and the stern hatchway cover is configured to connect the two inflatable gunwales at the stern, wherein each inflatable gunwale is cylindrical, each inflatable gunwale comprises two side portions and two edge banding strips, edges of one of the two side portions are connected with corresponding edges of the other of the two side portions by the two edge banding strips, and each of the edge banding strips is covered by a first reinforcing strip; and the bottom reinforcing layer is configured to cover a bottom surface of the inflatable floor, and side edges of the bottom reinforcing layer are connected with corresponding outer side surfaces of the inflatable gunwales, wherein the two side portions are butted with each other or connected in an overlapping manner; and a joint between the bottom reinforcing layer and each of the inflatable gunwales is covered by at least another first reinforcing strip, the inflatable kayak further comprises two boat caps and second reinforcing strips, wherein an edge of each of two boat caps is provided with one of the second reinforcing strips; one of the two boat caps is sleeved on the prow, and the other of the two boat caps is sleeved on the stern; and the boat cap located at the prow is connected to the prow hatchway cover, the two inflatable gunwales, and the inflatable floor through the corresponding second reinforcing strip, and the boat cap located at the stern is connected to the stern hatchway cover, the two inflatable gunwales, and the inflatable floor through the corresponding second reinforcing strip.