A dissolving and mixing unit for automatically dissolving and mixing medicines, comprising: a support (2, 102); a dissolving and mixing device (37, 171) mounted on the support (2, 102) and comprising two piercer bases and at least one dissolving and mixing channel, wherein each dissolving and mixing channel comprises two piercers (38, 39) and an elastic infusion hose connecting the two piercers (38, 39), and the two piercers (38, 39) of each dissolving and mixing channel are mounted respectively on the two piercer bases; a peristaltic pump (3, 4, 103,104) mounted on the support (2, 102) and configured to squeeze the elastic infusion hose; a movement mechanism configured to drive at least one of a first bottle-containing module (7, 49, 108, 109) and one piercer base to move, so that the piercer on the piercer base pierces a first medicine container (45, 46, 47, 129, 130, 131, 132, 133, 134, 135, 136) or separates from the first medicine container (45, 46, 47, 129, 130, 131, 132, 133, 134, 135, 136); and configured to drive at least one of a second bottle-containing module (14, 120) and the other piercer base to move, so that the piercer on the other piercer base pierces a second medicine container (41, 147) or separates from the second medicine container (41, 147), characterized in that, the dissolving and mixing unit further comprises the first bottle-containing module (7, 49, 108, 109) and the second bottle-containing module (14, 120); wherein the first bottle-containing module (7, 49, 108, 109) is mounted on the support (2, 102) and is configured to hold a first medicine container (45, 46, 47, 129, 130, 131, 132, 133, 134, 135, 136), wherein the first bottle-containing module (7, 49, 108, 109) comprises a plurality of bottle-containing elements, each of the plurality of bottle-containing elements being configured to secure the first medicine container (45, 46, 47, 129, 130, 131, 132, 133, 134, 135, 136), wherein said plurality of bottle-containing elements are linearly arranged along a horizontal direction or said plurality of bottle-containing elements are circumferentially arranged along a horizontal direction; wherein the second bottle-containing module (14, 120) is mounted on the support (2, 102) and is configured to hold a second medicine container (41, 147); and wherein the movement mechanism comprises a third movement mechanism configured to drive the first bottle-containing module (7, 49, 108, 109) or the one piercer base to move, so that each of the plurality of bottle-containing elements corresponds to the piercer on the one piercer base. a support (2, 102); a dissolving and mixing device (37, 171) mounted on the support (2, 102) and comprising two piercer bases and at least one dissolving and mixing channel, wherein each dissolving and mixing channel comprises two piercers (38, 39) and an elastic infusion hose connecting the two piercers (38, 39), and the two piercers (38, 39) of each dissolving and mixing channel are mounted respectively on the two piercer bases; a peristaltic pump (3, 4, 103,104) mounted on the support (2, 102) and configured to squeeze the elastic infusion hose; a movement mechanism configured to drive at least one of a first bottle-containing module (7, 49, 108, 109) and one piercer base to move, so that the piercer on the piercer base pierces a first medicine container (45, 46, 47, 129, 130, 131, 132, 133, 134, 135, 136) or separates from the first medicine container (45, 46, 47, 129, 130, 131, 132, 133, 134, 135, 136); and configured to drive at least one of a second bottle-containing module (14, 120) and the other piercer base to move, so that the piercer on the other piercer base pierces a second medicine container (41, 147) or separates from the second medicine container (41, 147), characterized in that, the dissolving and mixing unit further comprises the first bottle-containing module (7, 49, 108, 109) and the second bottle-containing module (14, 120); wherein the first bottle-containing module (7, 49, 108, 109) is mounted on the support (2, 102) and is configured to hold a first medicine container (45, 46, 47, 129, 130, 131, 132, 133, 134, 135, 136), wherein the first bottle-containing module (7, 49, 108, 109) comprises a plurality of bottle-containing elements, each of the plurality of bottle-containing elements being configured to secure the first medicine container (45, 46, 47, 129, 130, 131, 132, 133, 134, 135, 136), wherein said plurality of bottle-containing elements are linearly arranged along a horizontal direction or said plurality of bottle-containing elements are circumferentially arranged along a horizontal direction; wherein the second bottle-containing module (14, 120) is mounted on the support (2, 102) and is configured to hold a second medicine container (41, 147); and wherein the movement mechanism comprises a third movement mechanism configured to drive the first bottle-containing module (7, 49, 108, 109) or the one piercer base to move, so that each of the plurality of bottle-containing elements corresponds to the piercer on the one piercer base.