A horizontal high-speed paper cup/paper bowl forming machine is provided. Specifically, the seven-station main rotation tower forming mechanism has a stamping die station, a paper feeding connection station, a first cup bottom preheating station, a second cup bottom preheating station, a bottom crimping station, a rolling station, and a main and auxiliary tower connection station. The seven-station auxiliary rotation tower forming mechanism has the main and auxiliary tower connection station, a cup rim lubrication station, a pre-crimping station, a first final crimping station, a second final crimping station, a cup outlet station, and a reserved vacant station. The stations arranged in sequence along the circumferential direction of the seven-station main rotation tower forming mechanism is in an opposite order to the stations arranged in sequence along the circumferential direction of the seven-station auxiliary rotation tower forming mechanism.