Maker: Refers to the order placed by the party who quotes first, that is, to set up an order first, limit its price and quantity, and wait for other users to make a deal with it. If there is no matching order in the market for the time being, then this order will always be hung on the exchange's order book to provide quotations for the entire market.
Taker: Refers to take the initiative to deal with the orders that have been placed, that is, to place a certain number of orders based on the existing order prices on the exchange order, and immediately execute the orders placed on the order. If the entrustment demand of the taker is large and the supply exceeds the demand, the unsatisfied demand will become a new entrustment order as a pending order and continue to wait for the transaction if the order is not cancelled.
The Maker makes a quotation first, and the price matches, and the Taker who quotes later takes the initiative to conclude a deal with the placed order. This is the definition of Maker and Taker in spot trading.