Information on when family reunification is possible, under what conditions it may be permitted and what steps are required to achieve it may be obtained in individual cases from the immigration authorities and in general cases from the Federal Office for Migration and Refugees (BAMF).
Informationen zum Familiennachzug
In addition, there is a wide variety of scenarios under immigration law on which it is impossible to make an overall general pronouncement on whether family reunification is possible or not. For this reason, you should ask for detailed advice on this from the immigration authorities or from a refugee and immigration advice centre.
Familiennachzug