The invention relates to a use method of a fixed-point gel-placing water shutoff profile control agent, which is applied to water shutoff profile control of oil field flooding. The use method comprises the following steps of: step 1, pumping tracer suspension liquid to a water well via a cement truck, and timing, setting a terminal point of each section as a destination point, and ordering the destination points in sequence; step 2, calculating the time of the fixed-point gel-placing water shutoff profile control agent expected to reach each destination point, respectively; regulating the mass ratio of components of the fixed-point gel-placing water shutoff profile control agent according to the delay crosslinking time corresponding to the fixed-point gel-placing water shutoff profile control agent; and establishing the fixed-point gel-placing water shutoff profile control agent corresponding to the delay crosslinking time; and step 3, injecting the fixed-point gel-placing water shutoff profile control agent to the water well by using an electric pump; sequentially and continuously injecting to each destination point; closing the water well to complete the process of injecting the fixed-point gel-placing water shutoff profile control agent to the water well. The use method of the fixed-point gel-placing water shutoff profile control agent has the following effects: the water shutoff profile control can be better implemented, the measurement effect is guaranteed, the well is not needed to close for a long period of time, and the construction period of the water shutoff profile control is shortened.