As the cannabis industry continues to expand rapidly, understanding the best light sources for cannabis cultivation has become an essential topic for growers. Light is one of the most critical factors influencing plant growth, and different types of light sources vary significantly in spectrum, energy efficiency, heat output, and lifespan. This article will explore the primary light sources suitable for cannabis growth, including LED (Light Emitting Diodes), HID (High-Intensity Discharge), fluorescent lights, and other options, and analyze their respective advantages and disadvantages.