The present disclosure provides an urban forest garden building and a building group. Each odd-numbered floor includes a first apartment and a second apartment. A first hanging greenery platform of each odd-numbered floor corresponding to the first apartment is arranged in a first direction, and a second hanging greenery platform of each odd-numbered floor corresponding to the second apartment is arranged in a second direction. Each even-numbered floor includes a third apartment and a fourth apartment. A first hanging greenery platform of each even-numbered floor corresponding to the third apartment is arranged in a third direction, and a second hanging greenery platform of each even-numbered floor corresponding to the fourth apartment is arranged in a fourth direction. A high window or a laterally-opened window is arranged at an external wall of an upper floor located immediately above a current floor with the hanging greenery platform and the hanging greenery platform.
