Two-dimensional (2D) heterostructures, which are constructed via vertical stacking or lateral stitching of various 2D materials, have attracted considerable attention during the past 5 years. However, it is still a big challenge to achieve controllable construction of both lateral and vertical 2D heterostructures, which is considered to be an essential step toward further theoretical research and practical applications. Recently, chemical vapor deposition (CVD) has shown high controllability in the synthesis of various 2D materials, which has inspired intensive investigations into CVD growth of 2D heterostructures. Here, research progress in the controllable CVD growth of numerous 2D heterostructures is discussed. The review mainly covers three state-of-the-art strategies (temperature triggering, precursor design, and substrate engineering) for improving the controllability over 2D heterostructures. We conclude with the current challenges and future directions in this rapidly developing field.

通过垂直堆叠或横向缝合各种2D材料构造的二维（2D）异质结构在过去5年中引起了相当大的关注。然而，实现横向和纵向二维异质结构的可控构造仍然是一个巨大的挑战，这被认为是迈向进一步理论研究和实际应用的必不可少的步骤。最近，化学气相沉积（CVD）在各种2D材料的合成中显示出高度可控性，这激发了对2D异质结构的CVD生长的深入研究的灵感。在此，讨论了许多2D异质结构可控CVD生长的研究进展。审查主要涵盖了三种最新策略（温度触发，前体设计，和基板工程），以改善2D异质结构的可控性。我们以这个快速发展的领域中的当前挑战和未来方向作为结尾。