明永乐朝（公元1403—1424年，明成祖朱棣年号）历时21年，是明代国力强盛时期。随着景德镇瓷器业的昌盛繁荣和技术的不断进步，以其胎、釉精细，青色浓艳，造型多样和纹饰优美而负盛名，与宣德青花一道被称为开创了中国青花瓷的黄金时代。
永乐朝前后期瓷器质量发生很大变化，永乐早期制品基本接近洪武朝后期，而后期制品则与宣德早期相接。永乐青花端庄秀美，器物线条非常柔美流畅。讲究修胎，器形十分规整。瓷胎由于注意淘炼，胎质纯，含杂质少，胎质细腻，胎色洁白，胎体厚薄适度，灵巧凝重，较之洪武朝普遍轻薄一些。
永乐青花主要用“苏麻离青”钴料，烧造时有自然的晕散现象。由于苏麻离青含锰量低、含铁量高，降低了呈色中的红、紫色调，在适当的火候下就能烧出浓艳的青蓝色，犹如宝石蓝一般的光泽，色彩雅致凝重，鲜艳夺目，层次分明。不过由于青花含铁量高，往往会在青花烧成部分留下黑疵斑点，一条纹理中常见的钴铁结合晶斑，浓重处凝聚为黑色锡光，下凹深入胎骨，用手抚摸有凹凸不平感。也有将进口料和国产料相结合使用的，如以淡色国产料绘云水，浓色进口料绘游龙，使色泽对比鲜明，凸现主题。永乐青花图案形式多样、丰富多彩，纹饰疏朗秀丽、笔意自然，无论是粗笔写意还是细笔描绘，均给人以清秀感，具有鲜明的时代特征。画面多留白地。图画花纹多为双勾填色，一改前朝大笔涂抹的笔法，绘笔用小笔触，往往出现深浅不一的颜色。圆器内外加花，并广泛采用器心绘画的装饰手法。青花纹饰的线条中常有钴铁的结晶斑，这是由于钴料研磨不细所致。
The Yongle Dynasty of Ming Dynasty (1403-1424 A.D., the year of Zhu Di, Emperor Chengzu of Ming Dynasty) lasted for 21 years, which was a period of strong national strength in Ming Dynasty. With the prosperity of Jingdezhen porcelain industry and the continuous progress of technology, Jingdezhen is famous for its fine body and glaze, rich cyan color, various shapes and beautiful patterns. Together with Xuande blue and white porcelain, Jingdezhen is known as the golden age of Chinese blue and white porcelain.
The quality of porcelain in the early and late Yongle Dynasty changed a lot. The early Yongle products were basically close to the late Hongwu Dynasty, and the later Yongle products were connected with the early Xuande Dynasty. Yongle blue and white is dignified and beautiful, and its lines are very soft and smooth. Pay attention to tire repair, the shape is very regular. The porcelain body is pure, with few impurities, fine texture, white color, moderate thickness, dexterous and dignified, which is lighter than that of Hongwu Dynasty.
Yongle blue and white mainly uses "Su Ma Li Qing" cobalt material, which has a natural halo phenomenon when firing. Due to the low manganese content and high iron content of sumaliqing, the red and purple tones in the color rendering are reduced. Under the appropriate fire conditions, it can produce a rich cyan blue, which is just like the luster of sapphire blue. The color is elegant, dignified, dazzling and distinct. However, due to the high iron content of blue and white, black spots are often left in the firing part of blue and white. A common cobalt iron crystal spot in the texture is condensed into black tin light in the thick part. The concave part goes deep into the fetal bone, and there is an uneven feeling when you touch it with your hand. There are also imported materials and domestic materials used in combination, such as light domestic materials painted cloud water, thick imported materials painted dragon, so that the color contrast, highlighting the theme. Yongle's blue and white patterns are various and colorful, with sparse and beautiful ornamentation and natural brushwork. Whether it is freehand brushwork or fine brushwork, they all give people a sense of beauty, with distinct characteristics of the times. The picture is mostly white. Most of the decorative patterns in pictures are filled with double hooks, which changes the painting method of the previous dynasty. The small strokes of the painting pen often lead to different shades of color. The decorative technique of painting in the center of the vessel is widely used. Blue and white decorative lines often have cobalt and iron crystal spots, which is due to the cobalt grinding is not fine.