An elderly Bronx woman who thought she was lighting a candle lit fireworks instead — and may have lost some of her fingers, police said.

Ngon Ho, 78, suffered “significant injury” Friday evening when she lit the firework inside her apartment on Davidson Avenue near West Fordham Road in Fordham Manor, said cops.

Ho may have lost the thumb, index and middle fingers on her right hand, sources said.

Cops and neighbors did not know what kind of firework the woman lit.