Manufacturing method of double-letter chess-cards

The invention discloses a manufacturing method of double-letter chess-cards. The method comprises the steps of manufacturing mahjong pieces, cards and Chinese checkers. Each chess-card of the chess-cards consists of a chess-card main body and an outer shell. Two different letter symbols of the 26 English letters are manufactured on each chess-card. According to the using frequency of the letters, the letters with high frequency for spelling English words and the letters with low frequency for spelling the English words are combined into pairs. The manufacturing frequencies of all the letter symbols on the chess-cards are the same, so that the contradiction that the high-frequency letter chess-cards are not enough to use and the low-frequency letter chess-cards are not required to be used and become waste cards can be effectively avoided; the total number of the English chess-cards can be reduced to the maximal extent. The English double-letter chess-cards and the common cards or the common mahjong pieces are integrated by also manufacturing one of the common card symbols or one of the common mahjong symbols on each chess-card additionally, so that the chess-cards are multifunctional and diversified, can be used as a teaching aid by various schools, can serve as entertainment supplies for family life and social interaction, and are particularly suitable for students to learn English and primary mathematics.