The pulp molded cup lid production line is composed of a pulping system, a host device, a vacuum system, a high-pressure water system and an air compressor system, and is used to produce disposable pulp molded cup lids. The production line uses sugarcane pulp, bamboo pulp, wood pulp, reed pulp, straw pulp and other pulp boards as raw materials, and it is prepared into a pulp with a certain concentration through the processes of hydrapulping, refining, adding chemical additives, etc. It is evenly attached to a special metal mold to form a wet blank product, and then a disposable pulp molded product is produced through the drying, hot pressing, punching and trimming, and stacking processes. The average production capacity of the host system is 100,000 pieces / day. And it can be customized per the actual situation of customers.