The present disclosure discloses a comprehensive lint filtering device and a washing machine. The filtering unit comprises a filtering cover (100) and a filter (200), wherein the filter (200) is installed on the filtering cover (100), the filter (200) is provided with a first filtering cavity, a water inlet of the first filtering cavity is arranged at the rear part of the filter (200), and a water intake channel of the first filtering cavity is arranged between the rear part of the filter (200) and the filtering cover (100); a second filtering cavity is also formed between the upper part of the filter (200) and the filtering cover, and water inlets of the second filtering cavity are arranged on two sides of the filtering cover; and a filtering part is arranged at the front part of the filter (200), and the first filtering cavity and the second filtering cavity share the filtering part. The second filtering cavity achieves lint filtering in a way of inputting water from two sides of the front part and draining
