The Weiyuan Shale Gas Field (hereinafter, "Weiyuan Block" for short) is located in the Changning–Weiyuan National Shale Gas Demonstration Region, Sichuan Basin. In the Weiyuan Block, gas wells even on the same platform are quite different in production performance. And so far, the main factors controlling the gas production rate of shale gas wells in this block and the effectiveness of their development technologies and measures have not been understood clearly. In this paper, 6 horizontal wells on PT2 platform in the Weiyuan Block were taken as the research objects. Aiming at the differences of production performance between these gas wells,  this paper analyzes the high-quality shale drilling length, dip direction of horizontal section, length of fracturing interval, number of fracturing stages, sand volume and bottom-hole liquid loading to figure out the main factors affecting the gas production rate of shale-gas horizontal wells. Then, it proposes the targeted development measures and suggestions. And the following research results were obtained. First, high-quality shale drilling length is the material and geological guarantee for the high yield of gas wells, and length of horizontal fracturing interval, number of fracturing stages/clusters and sand volume are the main engineering factors. Second, in the early production stage of shale gas wells, the produced gas contains liquid with higher water–gas ratios. When gas production rate is lower than the critical liquid-carrying flow rate, the effect of bottom-hole liquid loading on gas production rate and wellhead pressure cannot be ignored. Third, it is recommended that small tubing (ID≤62 mm) be applied to low-yield wells. When the upward inclined well has low production, skid-mounted drainage gas recovery tools and measures shall be adopted as early as possible to release gas well productivity. And when the downward inclined well has low production, the production method of decreasing tubing pressure shall be adopted to prevent the early bottom-hole liquid loading.