如果您查看Mage_Adminhtml_Catalog_ProductController，您将看到有问题的产品两次，因此这两种方法都可以使用:

If you look at Mage_Adminhtml_Catalog_ProductController you will see the product in question twice, so either of these will work:

$product = Mage::registry('product');
echo $product->getId();

$product = Mage::registry('current_product');
echo $product->getId();