Sales climbed 47.4 percent to 111.3 billion yuan (13.61 billion dollars) in the first quarter.
Adjusted net profit even shot up by 64.5 percent to 10.7 billion yuan.
Xiaomi thus exceeded analysts' expectations for both key figures.
At the same time, the company, previously known for its smartphones, is continuing to boost the production of e-cars.
The booming division achieved sales of 18.1 billion yuan in the three months to March 31 with 75,869 SU7 sedans delivered.
The premiere vehicle has already replaced the Model 3 from US rival Tesla as the best-selling electric car in China.
Xiaomi recently presented the YU7, with which it wants to compete with Tesla's Model Y.
The division is still in the red: In the first quarter, Xiaomi posted a loss of 0.5 billion yuan in the e-car business.