The invention relates to a transmission position acquisition and indication method, a terminal, a base station, a medium and a system, the transmission position acquisition method comprises the following steps: receiving an RRC signaling sent by the base station, the RRC signaling comprising a starting symbol bias set of a PUCCH and an ending symbol bias set of the PUCCH; and determining the initial symbol and length of the PUCCH based on the RRC signaling. By applying the scheme, the UE can send the PUCCH to the base station, so that the base station knows the PUCCH to realize normal communication.