Hypopharyngeal cancer and esophageal cancer often occur synchronously or metachronously. Timely screening, diagnosis and individual treatment are important to improve the prognosis of patients. At present, there is no clinical guideline or consensus in this cross-cutting area in China, and there is a need of consistent diagnosis and treatment recommendation for these patients. Under the sponsorship of the Committee of Esophageal Cancer in China Anti-Cancer Association, the Chinese Working Group on Cooperative Diagnosis and Treatment of Hypopharyngeal and Esophageal Cancer was established by domestic experts in the fields of otolaryngology head and neck surgery, radiation oncology, and gastrointestinal endoscopy. This consensus document on multiple primary cancers (simultaneous or metachronous) of the hypopharynx and esophagus was developed through literature review, collective experience and expert discussions. The goals of the consensus include: (1) raising concern for this cross-cutting field; (2) establishing a preliminary clinical diagnosis and treatment recommendation; (3) preparing for the establishment of future high-level guidelines through standardized clinical practice.