A bottom-compression type high pressure scroll compressor, comprising: a casing; a motor unit (20; 120) disposed in an inner space of the casing to operate a rotating shaft (50; 125); wherein the inner space of the casing is divided into a lower space and an upper space based on the motor unit (20, 120); a compression unit disposed at one side below the motor unit (20; 120) in the lower space of the casing, a discharge space, which is a space defined between an upper surface of the compression unit a lower surface of the motor unit (20,120); wherein the discharge space comprises an inner space (S12a) and an outer space (S12b) which communicate with each other; wherein the compression unit has a discharge passage through which refrigerant compressed while the compression unit is driven by the rotating shaft (50; 125) is discharged into the inner space (S12a) of the discharge space; a refrigerant discharge tube having one end communicating with the upper space of the casing and another end connectable to a refrigeration cycle, such that the refrigerant discharged from the inner space (S12a) of the discharge space into the upper space of the casing through at least an inner passage flows to the refrigeration cycle; being characterized in that it further comprises: a venturi tube disposed adjacent to the refrigerant discharge tube in the upper space; wherein the venturi tube includes a first large-diameter portion and a second large-diameter portion formed at both ends thereof to define a first open end and a second open end, respectively, and at least one small-diameter portion formed between the first large-diameter portion and the second large-diameter portion; wherein one of the first and second open end of the venturi tube overlaps at least partially the inner passage; and a liquid refrigerant discharge tube having a first end connected to the at least one small-diameter portion of the venturi tube and a second end opposite to the first end of the liquid refrigerant discharge tube and communicating with the outer space (S12b) of the discharge space. a casing; a motor unit (20; 120) disposed in an inner space of the casing to operate a rotating shaft (50; 125); wherein the inner space of the casing is divided into a lower space and an upper space based on the motor unit (20, 120); a compression unit disposed at one side below the motor unit (20; 120) in the lower space of the casing, a discharge space, which is a space defined between an upper surface of the compression unit a lower surface of the motor unit (20,120); wherein the discharge space comprises an inner space (S12a) and an outer space (S12b) which communicate with each other; wherein the compression unit has a discharge passage through which refrigerant compressed while the compression unit is driven by the rotating shaft (50; 125) is discharged into the inner space (S12a) of the discharge space; a refrigerant discharge tube having one end communicating with the upper space of the casing and another end connectable to a refrigeration cycle, such that the refrigerant discharged from the inner space (S12a) of the discharge space into the upper space of the casing through at least an inner passage flows to the refrigeration cycle; being characterized in that it further comprises: a venturi tube disposed adjacent to the refrigerant discharge tube in the upper space; wherein the venturi tube includes a first large-diameter portion and a second large-diameter portion formed at both ends thereof to define a first open end and a second open end, respectively, and at least one small-diameter portion formed between the first large-diameter portion and the second large-diameter portion; wherein one of the first and second open end of the venturi tube overlaps at least partially the inner passage; and a liquid refrigerant discharge tube having a first end connected to the at least one small-diameter portion of the venturi tube and a second end opposite to the first end of the liquid refrigerant discharge tube and communicating with the outer space (S12b) of the discharge space. a venturi tube disposed adjacent to the refrigerant discharge tube in the upper space; wherein the venturi tube includes a first large-diameter portion and a second large-diameter portion formed at both ends thereof to define a first open end and a second open end, respectively, and at least one small-diameter portion formed between the first large-diameter portion and the second large-diameter portion; wherein one of the first and second open end of the venturi tube overlaps at least partially the inner passage; and a liquid refrigerant discharge tube having a first end connected to the at least one small-diameter portion of the venturi tube and a second end opposite to the first end of the liquid refrigerant discharge tube and communicating with the outer space (S12b) of the discharge space.