Wednesday's report from the advisory Family Justice Council says "despite the lack of research evidence, and international condemnation, reference is still made to the discredited concept of 'parental alienation syndrome'."
This is the idea that children show a recognisable pattern of behaviours if they have been manipulated by one parent against the other.
The guidance describes this as a "harmful pseudo science".
It says there are genuine cases where alienating behaviours "impact" a child's relationship with the other parent, but they are "relatively rare".
According to research, over half of all private law cases involving children include allegations of domestic abuse.
It is not known how many include parental alienation, though judges have observed a rise in their own cases.
The guidance says "allegations of domestic abuse and 'parental alienation' cannot be equated" - pointing out that domestic abuse is a crime.
It is increasingly common for the parent accused of abuse, usually the father, to respond by claiming that the mother has turned the children against them.
These cases can drag out for many years, as the relationship between parents deteriorate, and children are affected.
Some come to court multiple times.
Where there is a claim of parental alienation psychologists can become involved, and their evidence is often influential.
In a case heard by the High Court late last year, Judge Mrs Justice Judd presided over a case involving two parents who had separated in 2017.
The mother told the family court then the father had abused her, and was granted a non-molestation order - injunctions used in urgent abuse cases.
The father had the right to contact with the children, supervised at first, but three years later, the father came to court saying contact between him and the children had broken down.
A psychologist, Melanie Gill, was asked to provide a "global assessment" of the family, which she filed in 2022.
She said the mother had unconsciously turned the two secondary school-age children against their father, something which the father seized on.
The mother was very worried she would lose her children, as she told The Bureau of Investigative Journalism, though she did win her case.