Learning to write Chinese calligraphy, standing posture and sitting posture require students to have their elbows and wrists drooping, their heads straight, their bodies straight, their shoulders flat and their feet stable. It will greatly improve children's bad habit of learning hard-pen calligraphy by integrating the essentials of pen writing into hard-pen calligraphy and letting hard-pen calligraphy correctly learn from the brushwork and posture of brush calligraphy. Soft pen contains rich techniques such as ink and wash, shading and lifting, while brush is soft and elastic, paying more attention to the strength of lines and the flexible rotation of wrists, which also plays an auxiliary role in the writing strength and frame structure of hard pen. The combination of the artistry of brush and the practicality of hard pen brings out the best in each other, and the effect is self-evident.