Police were called to a home in Pritchard Close just after 11am (AEST) to reports there was an armed man at the property.
Officers arrested a 29-year-old local man before finding the body of a 29-year-old woman inside the home.
The man was charged with murder (domestic violence offence) and is due to appear in Cairns Magistrates Court today.
The investigation is ongoing.
Anyone with information is urged to contact police.