There is presented an easy-to-assemble trampoline kit, providing improved assembly complexity and reducing assembly time over prior approaches, while also enhancing stability and user safety. Aspects of the present invention include: a support frame for mounting a rebounding mat and a protective net, net support posts for mounting and positioning the protective net; wherein lower ends of the net support posts are inserted into connection joints of the support frame, and the protective net is connected to the net support posts such that the protective net is in a tensioned state. Also provided with the trampoline are water spray nozzles to enhance user enjoyment of the trampoline. Such an easy-to-assemble trampoline allows for a convenient assembly operation of the net support posts on a trampoline, and a convenient connection between the protective net and the net support posts, which is conducive to efficient trampoline assembly and safety.