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Floating Wheat and Black Bean Soup (Fu Xiao Mai Hei Dou Tang)

traditionally used to reduce excessive perspiration and night sweats in children and adults

In short: Floating Wheat and Black Bean Soup (Fu Xiao Mai Hei Dou Tang) is a soup that traditionally used to reduce excessive perspiration and night sweats in children and adults. It is most often made for children's wellness. Total time about 1 hr 10 min. Key ingredients: black beans, red dates / jujubes, pitted, lean pork.

By · Published under our editorial policy · Research library

Prep
10 min
Cook
1 hr
Total
1 hr 10 min
Makes
600 ml
Children's Wellness
Floating Wheat and Black Bean Soup (Fu Xiao Mai Hei Dou Tang)

Why people make this soup

Many young children sweat heavily during sleep — soaking their pyjamas despite a comfortable room temperature, with sweat that has no salt smell and is noticeably different from the normal sweat of exertion. In traditional Chinese food therapy, this kind of soft, odourless sweating is called “deficiency sweating” (xu han) and is considered a sign that the body’s ability to hold moisture in place is temporarily weakened. If left unaddressed over time, it can contribute to fatigue, poor concentration, and a general sense of depletion. Adults with similar night sweats — waking with damp clothing or bedding — can benefit from the same approach. This simple, gentle soup is one of the most frequently recommended remedies in Nourilo’s many years of answering readers’ questions, and the feedback has consistently been positive.

What studies say about the key ingredients

Traditional use is not the same as clinical proof. Here is the strongest human research we found for each ingredient, limitations included.

  • Black soybeans · Randomized controlled trial, 100 participants · 2013
    Systolic blood pressure fell more in the black soy peptide group (-9.69 mm Hg) than in the placebo group (-2.91 mm Hg) after baseline adjustment. Plasma malondialdehyde decreased and superoxide dismutase activity increased compared with placebo.Limitation: Used an isolated peptide supplement rather than whole black soybeans, and followed participants for only 8 weeks, so the results may not apply to food intake.PubMed 23924691
  • Red dates · Meta-analysis, 483 participants · 2025
    Jujube was associated with significantly lower BMI and triglycerides, and lower fasting blood sugar in people with type 2 diabetes. LDL and total cholesterol fell only in some subgroups. HDL, AST and ALT did not change significantly.Limitation: The authors state the overall quality of the evidence is limited, and results varied significantly by dose, treatment duration and disease type.PubMed 40399274 · 3 more red dates studies

From the Nourilo Research Library. Findings come from specific doses, extracts and populations and may not apply to a home-cooked recipe.

Safety first — read before you cook

This is a traditional food, not a treatment. Please check with your doctor or pharmacist before making it a regular part of your diet if you:

  • are pregnant or breastfeeding, or are cooking for a young child;
  • take regular medicines — especially blood thinners, blood-pressure, diabetes or immune-suppressing drugs;
  • have a kidney, liver or heart condition, or a known food allergy.

Stop eating it and seek advice if you notice an allergic reaction or feel unwell. Safety notes reviewed 8 October 2026 · How we write safety notes

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