您可以实现自己的INamingStrategy并为您的配置指定它：

Configuration config = new Configuration();
config.SetNamingStrategy(new MyTablePrefixStrategy());

对于流畅的实现。

public class AutoPersistenceModelGenerator : IAutoPersistenceModelGenerator
    {
        public AutoPersistenceModel Generate()
        {
            var mappings = new AutoPersistenceModel();
            mappings.AddEntityAssembly(typeof(User).Assembly).Where(GetAutoMappingFilter);
            mappings.Conventions.Setup(GetConventions());

.....
    private Action<IConventionFinder> GetConventions()
    {
        return c =>
        {
            c.Add<PrimaryKeyConvention>();
            c.Add<ReferenceConvention>();
            c.Add<HasManyConvention>();
            c.Add<TableNameConvention>();

......

public class TableNameConvention : IClassConvention
        {
            public void Apply(FluentNHibernate.Conventions.Instances.IClassInstance 
instance)
            {
                instance.Table(Inflector.Net.Inflector.Pluralize("Portal_" + 
    instance.EntityType.Name));
                }
            }