The invention provides a water inflow box component of a washing machine and the washing machine. The water inflow box component comprises a box body with opened top part and a seal cover arranged atthe top part of the box body; at least one feeding opening for feeding washing agent is arranged on the seal cover; the water inflow box component further comprises an retractable washing agent box arranged in the box body; a holding cavity corresponding to the feeding opening is arranged in the washing agent box, and the feeding opening is located above the corresponding holding cavity. Through the retractable washing gent box, the washing agent box can be taken from the box body when the water inflow box component is required to clean, the washing agent box and the inner cavity of the box body are cleaned respectively, thus it is good for keeping clean of the water inflow box component; moreover, the washing agent feeding opening is arranged on the seal cover, and the washing agent can be feed through the washing agent feeding opening at the top part in the process of feeding washing gent, and the washing agent box cannot be opened; therefore, no limiting and other structures are arranged on the washing agent box; the water inflow box component is good for simplifying structure and reducing the manufacturing cost.