The invention relates to a circular go chessboard. According to Lingshujing, the heaven is positive and the ground is negative; Easy Copulative has the ideas that the heaven accounts for nine and the ground accounts for ten, the heaven is round and the ground is square; 64 of Zhouyi are born between the heaven and the ground and superposed in pairs by 8*8, and 4/3 is an infinite cyclic number and expresses that the universe is infinite; the circular go chessboard consists of 64 radial lines with different lengths and 12 concentric circles, the radius differences of the adjacent concentric circles are Ds, the Ds are equal, the radius of the first circle (inner circle) is r, and the r is equal to 4/3 D; when chesses fall on the chessboard during playing, the chesses are not superposed, and every three chesses form a group from the inside to the outside; and the radial lines lifted on the 1st, 4th, 7th and 10th circles and two vertical crossing diameters are equally divided into 8, 16, 32 and 64 parts respectively, the numbers of four groups of equally divided points are 24, 48, 96 and 192 respectively, and the whole chess board has 361 points together with centers of the concentric circles and as same as a common square chessboard. 1 represents the universe; 2 represents yin and yang, heaven and earth; 3 represents heaven, ground and people, and total lives of the three; 4 represents four directions (east, south, west and north) and four seasons (spring, summer, autumn and winter); 9 represent positive pole number, namely nine on the heaven and ten on the ground in Easy Copulative; and 12 represents node number. The whole world is divided into 24 standard time zones according to the longitude, which is the sum of twelve east zones and twelve west zones. One day has 24 hours, which is the sum of twelve hours at day and night respectively. One year has twelve months. Son of ugly, c, d, e, f, afternoon, did not, Shen, J, Xu and Hai are earthly branches.