A chemical liquid spraying apparatus suitable for disinfecting and sterilizing a large space, comprising: a case equipped with a pressurized chemical liquid tank and a compressor； an extension connecting pipe including a compressed air pipe through which a part of compressed air supplied from the compressor flows, and a pressurized chemical liquid pipe through which a chemical liquid pressurized by a rest part of the compressed air supplied from the compressor flows from the pressurized chemical liquid tank； and a two-fluid nozzle attached to a distal end of the extension connecting pipe； wherein the two-fluid nozzle comprises a compressed air passage connected to the compressed air pipe and a pressurized chemical liquid passage connected to the pressurized chemical liquid pipe, and is configured that the compressed air and the pressurized chemical liquid are mixed and ejected.
