The main clinical symptom score in Potassium alginate group was significantly lower than that before the test and that in control group(P< 0.05).
海藻酸钾试食组主要临床症状积分降低，与安慰剂对照组及试食前比较差异有统计学意义（P<0.05）。
Conclusions: the dust mite allergens standardization of SIT can significantly reduce the dose of inhaled steroid, improve lung function, improve clinical symptom score and is secure.
结论：采用尘螨sit，可明显减少激素吸入剂量，改善肺功能，提高临床症状评分，安全可靠。
Results:After treatment, the clinical symptom score significantly decreased in both groups(P<0.01), and the therapeutic effect of the treatment group was superior to that in the control group(P<0.01).
结果：两组治疗后临床症状积分均比治疗前显著降低（P<0.01），且治疗组疗效明显优于对照组（P<0.01）；
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