A man has been charged with attempted murder after he allegedly attacked two men - firing a bow and arrow at one - on the NSW Mid North Coast.

A 42-year-old man was caring for his 93-year-old grandfather at a property at Aldavilla, Kempsey on Sunday morning.

Police will allege a 46-year-old man attacked the grandfather and was restrained by the grandson who forced him out of the house.

As one man attempted to close a bedroom window an arrow was fired through it, narrowly missing him, police allege.

The accused man was taken to Kempsey police station and charged with attempted murder.

Bail was refused and he is due to appear at Kempsey Local Court on Monday.