The following formula is for reference only and is not a substitute for formal medical advice. If you are seriously dehydrated or in other emergencies, please seek medical attention immediately. The standard World Health Organization (WHO) oral rehydration salt formula is not just salt and water, but also requires the addition of an appropriate amount of sugar to promote sodium absorption. Common home-made methods are as follows: • Prepare 1 liter (about 1000 ml) of clean drinking water • Add 6 level teaspoons (about 30 grams) of white sugar • Add 1/2 level teaspoon (about 2.6 grams) of table salt Instructions: Mix the above materials evenly and make sure that the sugar and salt are completely dissolved before drinking. This solution is designed to replenish body fluids and electrolytes in diarrhea or mild dehydration. Notes: 1. Never adjust the ratio by yourself, because improper concentration may lead to poor absorption or cause electrolyte imbalance. 2. If conditions permit, it is recommended to use professional oral rehydration salt powder and mix according to the instructions. 3. This homemade solution is suitable for mild dehydration or as an auxiliary measure. In severe cases (such as massive vomiting, diarrhea or worsening dehydration symptoms), you should seek medical attention and take professional treatment as soon as possible. 4. Homemade solutions should be consumed as soon as possible and should not be stored within 24 hours after production. Again, this answer is for informational reference only and does not constitute specific medical advice. Please consult a medical professional for specific circumstances.