The invention discloses hollow glass absorbing light energy in a passive mode. The hollow glass comprises a first glass body and a second glass body which are arranged in a spaced mode. Sealing fixing pieces are arranged around the first glass body and the second glass body and enable a sealed cavity to be formed between the first glass body and the second glass body. An air replacement film matched in use is arranged in each sealing fixing piece. A solar cell panel is arranged in the middle of the sealed cavity. Air replacement purifiers matched with the air replacement films in use are arranged at the two ends of the solar cell panel. The contradiction of heat insulation and passive solar heating of building glass in the prior art is overcome, meanwhile, the characteristics of interactive purifying of indoor air and outdoor air and multifunctional using are met, the efficiency of utilizing solar energy of a building in the passive mode is improved, and the practical using requirement is met.