Emperor Kangxi had three queens in his life, namely Hersairihara, Niu Zhilu and Tong Jiashi. These three queens basically died around the age of 20, among them, the filial piety empress Hesse Rihara died because of postpartum problems, and the other two queens died because of poor health.

First of all, Emperor Kangxi's favorite woman in his life is the filial piety empress Hersairihara, who is the wife of Emperor Kangxi and has been with Emperor Kangxi since childhood. She gave birth to two emperors, the eldest son Hu Cheng and the second son Yin Wei. Because the nobles in the Qing Dynasty were close relatives, they got married too early and gave birth to many children. The premature death of the eldest son born to the filial piety empress Hesse Rihara also led to the poor health of the filial piety empress Hesse Rihara. Later, when she gave birth to her second son, she had postpartum problems, which led to her death.

Secondly, Emperor Kangxi's second queen was Emperor Zhaoren's Niu Zhilu, who was Yong Zhengdi's foster mother. She was made queen in the sixteenth year of Kangxi and died the next year. The historical data did not record the cause of her death, only that she died of illness. At that time, sourdrang queen, the empress dowager, was also ill, but sourdrang queen let Emperor Kangxi go back to see it.

Finally, the third empress of Emperor Kangxi was Tong Jiashi, the empress of Xiao Yiren. Xiao Yiren's queen Tong Jiashi didn't really become a queen. She has just become an imperial concubine. She once gave birth to a daughter, but she also died soon. This also shows that Tong Jiashi, the queen of Xiao Yiren, is in poor health. Later, she was seriously ill and was made a queen by Emperor Kangxi, but she died soon, so Emperor Kangxi was very sad.