I find this
function admin_js() { ?>
<script type="text/javascript">
jQuery(document).ready( function () {
jQuery('form#post').find('.categorychecklist input').each(function() {
var new_input = jQuery('<input type="radio" />'),
attrLen = this.attributes.length;
for (i = 0; i < attrLen; i++) {
if (this.attributes[i].name != 'type') {
new_input.attr(this.attributes[i].name.toLowerCase(), this.attributes[i].value);
}
}
jQuery(this).replaceWith(new_input);
});
});
</script>
<?php }
add_action('admin_head', 'admin_js');