The present application provides a method for manufacturing an oropharyngeal mask, including the following steps: ultrasonically laminating a first waterproof layer element, a body element, and a second waterproof layer element by an ultrasonic laminating device, to obtain an oropharyngeal mask. The body element includes a first bendable hanging portion, a hollow frame portion, and a second bendable hanging portion. A to-be-shielded opening is provided inside the hollow frame portion, and the first bendable hanging portion and the second bendable hanging portion are arranged on both sides of the hollow frame portion. Before the ultrasonic laminating device performs ultrasonic lamination, the second waterproof layer element is placed below the body element, the first waterproof layer element is placed above the body element, and the first waterproof layer element and the second waterproof layer element cover both sides of the to-be-shielded opening. Further, an oropharyngeal mask is also provided.