Abstract: Comparing the policy evolution, plot texture and utilization during regeneration of Yanaka in Tokyo and Wudaoying in Beijing, the similarities and differences of the two urban historic conservation neighborhoods were summarized, which could provide inspiration and reference to the analogous regenerative projects in China. In terms of actual measurement data in fields and studying and sorting of literature, the composition of the two urban historic conservation neighborhoods, commercial forms in core streets, the utilization of street space were comparative. The continuation of plot texture was an important condition in maintaining space scales of urban streets. The constitution of residential buildings mixed with commercial facilities was helpful to form a new social network exciting activity of neighborhoods. The way of independent renewal for the residents was conducive to flexibly utilize street space. Therefore, the regeneration of urban historic conservation neighborhoods should attach great importance to active action of participating subjects in shaping neighborhoods and be regulated and guided appropriately under the administrational framework of existing policies.