To distinguish genuine Uno cards, you can refer to the following points:

1. Understand the Uno brand: Uno is a card game produced and sold by Mattel Company in the United States, so The genuine Uno brand should bear the Mattel company's trademark. This can be confirmed by checking whether there is Mattel's trademark on the card box or on the back of the card.

2. Observe the quality of the cards: Genuine Uno cards should be made of high-quality paper. The texture of the cards will be better, smooth and even in thickness. In contrast, non-genuine Uno cards may be of poorer quality, with rough paper texture that folds and tears easily.

3. Check the card pattern: The pattern of the genuine Uno card should be clear, colorful and rich in details. If you find that the pattern is blurry, the color is dim, or the details are missing, it may be an unauthorized Uno brand.

4. Purchasing channels: In order to ensure that you purchase genuine Uno brand, it is recommended to choose a regular shopping platform or go to a reputable physical store to purchase. This reduces the risk of purchasing non-genuine products.

In short, when purchasing Uno cards, you should carefully observe the card box, card back, card quality, pattern and other characteristics. It is best to choose formal channels to purchase, so that you can get genuine Uno cards more securely.