The reasons why a male cat repeatedly enters the litter box without peeing:

1. The cat does not like to use the litter or litter box. When the cat litter is too dirty, emits a strong smell, or the owner replaces the cat litter with new litter, or the litter box is too small, the cat will refuse to go to the toilet in the litter box.

2. The cat drinks too little water. When cats usually drink too little water, they will have problems with oliguria or difficulty urinating. Owners should take measures to make cats drink more water.

3. The cat was frightened. When the cat litter box is in a noisy environment, or the cat is frightened when excreting, the cat will be unable to urinate. The owner should place the cat litter box in a quiet environment.

4. The cat’s diet is unreasonable. When a cat consumes a large amount of salt or lacks vitamins, the cat will have difficulty urinating. The owner must adjust a reasonable diet in time.

5. The cat is sick. When a cat suffers from urinary stones, kidney stones, cystitis and other diseases, it will have difficulty urinating. Therefore, the owner should take the cat to the hospital for examination in time. After the diagnosis is confirmed, symptomatic treatment can be provided.