对于任何有类似需求的人，我实施了这种递归解决方法。

const renderNestedOption = (props, label, nestedOptions) => {
  const {
    cx,
    getStyles,
    innerProps,
    selectOption,   
  } = props;

  // Will be applied to nested optgroup headers 
  const nestedLabelClassName = cx(
    css(getStyles('groupHeading', props)),
    { option: true },
    'nested-optgroup-label',
  );    

  return (
    <div className="nested-optgroup">
      <div className={nestedLabelClassName}>
        {label}
      </div>
      {nestedOptions.map((nestedOption) => {
        if (nestedOption.options) {
          // Read below
          // Read above
          return renderNestedOption(props, nestedOption.label, nestedOption.options);
        }

        const nestedInnerProps = innerProps;
        nestedInnerProps.onClick = () => selectOption(nestedOption);
        return (
          <div className="nested-optgroup-option" key={nestedOption.value}>
            <components.Option {...props} innerProps={nestedInnerProps}>
              {nestedOption.label}
            </components.Option>
          </div>
        );
      })}
    </div>   
  ); 
};

const Option = (props) => {
  const {
    children,
    data,
  } = props;
  const nestedOptions = data.options;

  if (nestedOptions) {
    const label = data.label;
    return renderNestedOption(props, label, nestedOptions);
  }

  return (
    <components.Option {...props}>
      {children}
    </components.Option>
  );
};

然后在您选择的组件中，将组件替换为我们刚刚创建Option的自定义Option组件。

编辑

有一个开放的拉取请求来支持这个功能：https : //github.com/JedWatson/react-select/pull/2750