在主题的函数中。php：

function hide_the_dashboard()
{
    global $current_user;
    // is there a user ?
    if ( is_array( $current_user->roles ) ) {
        // substitute your role(s):
        if ( in_array( \'custom_role\', $current_user->roles ) ) {
            // hide the dashboard:
            remove_menu_page( \'index.php\' );
        }
    }
}
add_action( \'admin_menu\', \'hide_the_dashboard\' );

function your_login_redirect( $redirect_to, $request, $user )
{
    // is there a user ?
    if ( is_array( $user->roles ) ) {
        // substitute your role(s):
        if ( in_array( \'custom_role\', $user->roles ) ) {
            // pick where to redirect to, in the example: Posts page
            return admin_url( \'edit.php\' );
        } else {
            return admin_url();
        }
    }
}
add_filter( \'login_redirect\', \'your_login_redirect\', 10, 3 );