A MAN has been denied bail after he was charged with the "deplorable" abuse of a seven-year-old child in his Sydney home.

The 29-year-old garbage collector, who can't be named for legal reasons, appeared via video link in Parramatta Bail Court yesterday where bail was applied for but refused by Magistrate Paul Lyons.

The man was charged with numerous child abuse offences after the boy was found dead at his Oatley home on May 21 but no charges have been laid in relation to the boy's death.

The court heard there is strong evidence against the man, including video recordings, forensic evidence and witness accounts, of prolonged and systematic abuse.

At least one video recording allegedly showed other children being encouraged to participate in the abuse, which police claim took place at the mother's house.

The court heard child protection authorities, who had been notified of the boy before his death, have since removed the man's other children.

The man is also expecting a child with the boy's mother.