The invention discloses an urban road rainwater storage and drainage system. The urban road rainwater storage and drainage system is characterized by comprising a rainwater pipeline drainage system (1), a sewage pipeline drainage system (2), one or more first rain storage system (3) and a later rain storage system (4); the rainwater pipeline drainage system (1) and the sewage pipeline drainage system (2) are arranged along a road; each first rain storage system (3) comprises a flow division well (30) used for dividing first rain, is communicated with the rainwater pipeline drainage system (1) through the corresponding flow division well (30) and is communicated with the sewage pipeline drainage system (2) through a first rain return pipeline (3a); the later rain storage system (4) comprises a later rain collection well (40) and is communicated with the rainwater pipeline drainage system (1) through the later rain collection well; the later rain collection well is positioned at a downstream position of one flow division well (30) and is adjacent to one flow division well (30), and a downstream position of the later rain storage system (4) is communicated with the rainwater pipeline drainage system (1) through a later rain return pipeline (4a).