The present invention discloses a filtered detergent dispensing assembly and a washing apparatus, the filtered detergent dispensing assembly comprising a drawer and a cassette for accommodating the drawer, the drawer comprising, a detergent chamber for accommodating detergent; a filtration module, provided on the drawer for filtering debris; and a self-cleaning module, which is connected to the filtration module for cleaning the filtration module. By providing a filtration module and a self-cleaning module on a drawer provided with a detergent chamber, the present invention is able to filter and circulate the washing water, integrate the detergent box and the filtration module in a single unit, and reduce the space occupied by the filtration module; and utilize the self-cleaning module to clean the filtration module, preventing the filtration module from being clogged to affect the filtration effect.