Abstract: To improve the yield of‘Ba-xuan 3’, the paper based on test data, using the correlation analysis, regression analysis and path analysis principle to analyze the key factor affecting production in four, including plants number per unit area, capsules per plant, fruits number and 1000-grain weight. The results showed that the between 1000-grain weight and yield were the highest, reached extremely significant level of 0.6549, the direct path coefficient was 0.466987, followed by correlation coefficient between capsules per plant and yield, which was 0.42873, also reached significant level, and the direct path coefficient was 0.479035. The correlation did not reach significant level between plants number per unit area, fruits number and yield, the direct path coefficient were 0.38956 and - 0.14038. To improve yield of‘Baxuan 3’, we should formulate cultivation technique measures around 1000- grain weight and capsules per plant. We proposed concrete technical scheme of water control, prevention and control of powdery mildew, prevent lodging, timely early harvest.