The invention discloses a logging combination instrument for a low-yield-liquid horizontal well production profile and with double working modes, and relates to the technical field of logging of horizontal wells in oilfields. The logging combination instrument comprises a sleeve; the sleeve is internally provided with a combination instrument main body; a flow-guiding mechanism is arranged betweenthe combination instrument main body and the sleeve; a first flow channel is formed between the sleeve and the combination instrument main body; the combination instrument main body is internally provided with a second flow channel, and the second flow channel is internally provided with an oil-water overflowing and accumulation selecting mechanism and a measuring mechanism; the oil-water overflowing and accumulation selecting mechanism selects or switches an oil-phase overflowing measuring mode or an oil-phase accumulation measuring mode; the measuring mechanism measures the flow and the water content of a fluid under the oil-phase overflowing measuring mode or the oil-phase accumulation measuring mode; and the flow-guiding mechanism guides a fluid in the first flow channel into the second flow channel, wherein low yield liquid is 1 m<3>/d-10 m<3>/d. The problem of measuring of the flow and the water content of the low-yield-liquid horizontal well is solved.