A lint filter in a laundry treatment machine includes a lower filter for filtering out debris of washing water and an upper filter for collecting debris as well as filtering out foreign substances of washing water flowed in from the lower filter. Since debris is collected in the upper filter, recontamination by debris can be prevented and cleaning of a lint filter can be simplified. The upper filter and the lower filter are connected by a connection path and as washing water and debris in the lower filter move to the upper filter at the time rising water flows of washing water are generated, debris can be collected inside the upper filter, and debris can be collected by using rising flows of washing water. A filter cover is combined with a filter frame and a filter body as a tightly coupled single body, and the filter cover is detached only from the filter frame while tightly coupled with the filter body, so that attaching and detaching is made simple and cleaning thereof can be simplified.