The utility model relates to an adjustable coin conveying apparatus, belonging to the coinage equipment technical field. The apparatus comprises a horizontal conveying turntable supported on a frame bench; the periphery of the turntable is rounded by a C-shaped coin containing back-up ring; the opening of the coin containing back-up ring tangentially extends out of a coin conveying channel; a coin press belt component is installed above the coin conveying channel, and two sides of the coin conveying channel are respectively provided with a left coin channel back-up sheet and a right coin channel back-up sheet; the coin press belt component is mainly composed of a coin press belt driven by a motor; one of the left and right coin channel back-up sheets is a fixed back-up sheet, and the other is an adjustable back-up sheet; the adjustable back-up sheet forms a sliding pair with the frame bench through an elastic apparatus which almost separate back-up sheets; the outside of the adjustable back-up sheet contacts with a cam hinged on the frame bench; a cam shaft is provided with a positioning member. Accordingly, through adjusting the contact modulus between the cam and the adjustable back-up sheet, the distance between the left coin channel back-up sheet and the right coin channel back-up sheet can be adjusted, thereby adjusting the width of the coin conveying channel to adjust for coins with different standards.