A junior rugby league official accused of punching a teenage referee in the face yesterday has been stood down by his club.

The Cronulla Junior Rugby League has suspended the official charged with attacking the 16-year-old referee during a junior match in southern Sydney on Saturday.

The 16-year-old was taken to the Children's Hospital at Randwick after the incident at Engadine.

The club said the 34-year-old trainer was stood down pending the outcome of his court appearance on Wednesday.

The League says it will also hold its own judicial hearing into the incident after that hearing.

"Penalties can range from anything from a caution to a life suspension," NSW Rugby League chief executive Dave Trodden said.

"Based on the allegations that become public, if they're proven... You'd expect a penalty at the higher end of the range, rather than the lower end of the range."

The trainer has also been banned from all rugby league grounds in the Sutherland Shire.

The League's judiciary will assess the matter after the man's court appearance on Wednesday.