It is not possible to generalize whether you can drink passion fruit honey water for cough. Honey is mild, sweet in taste and belongs to the lung, spleen and large intestine meridians, and has the effect of moistening the lungs and relieving cough, while passion fruit is warm in nature, bitter in taste and belongs to the lung meridians, and has the effect of moistening the lungs, resolving phlegm and relieving cough. Therefore, if it is a cough of the Yin deficiency and lung dryness type, you can drink passion fruit honey water for supplementary treatment. Common symptoms of cough with Yin deficiency and Lung dryness include cough without phlegm, or a little blood in the phlegm, a small amount of phlegm, accompanied by irritable heat in the five hearts, hot flashes and night sweats, redness in both cheekbones, low fever in the afternoon, red tongue with little coating, etc. Such a symptom would be a cough of the Yin deficiency and lung dryness type, and you can drink passion fruit and honey water to play a supplementary therapeutic role. If the lung is affected by wind-cold, you should not drink passion fruit and honey water. You can use Sanjiao tablets and cough suppressant to disperse wind-cold and promote the lung to stop coughing. If it is wind-heat attacking the lung, it can be treated with mulberry chrysanthemum drink. If the lung is injured by dryness, it can be treated with Mulberry and Apricot Soup. You can also drink a little bit of passion fruit and honey water to assist in the treatment, to moisten dryness, stop cough and resolve phlegm. If phlegm is contained in the lungs, use San Zi Yang Yin Tang and Er Chen Wan. If it is phlegm-heat contained in the lung, you can treat it with Qing Jin Hua Phlegm Tang. If it is a cough with Yin deficiency and lung dryness, use Nourishing Yin and Clearing Lung Oral Liquid to nourish Yin, moisten the lung and stop cough for treatment.