The utility model relates to a dolly of milking suitable for hard basic place and soft basic place has frame, directive wheel mechanism, driven wheel mechanism, supporting leg mechanism and supporting leg and controls the mechanism, when the dolly during in the operation of hard basic place to wheel among directive wheel mechanism and the driven wheel mechanism is mode of moving ahead and support mode, and the supporting leg was controlled the mechanism and was caused supporting leg mechanism upwards to break away from ground under the effect that does not receive external force to pack up this moment, when the dolly during in the operation of soft basic place to supporting leg mechanism is the support mode, this moment the supporting leg control the mechanism cause under the effect of external force supporting leg mechanism stretch out downwards and during to the extreme lower position wheel among locking and directive wheel mechanism and the driven wheel mechanism leave ground. The dolly of should milking can be adapted to hard basic place and soft basic place in a flexible way simultaneously, according to the work occasion of difference, can switch over freely and carry out and stable milking operation, and easy operation during the use can improve the efficiency of milking effectively, reduces the workman's that milks intensity of labour.