The utility model relates to a proportional pressure regulation control system for an automatic gearbox of a forklift. The system comprises a pilot valve, a proportional pressure reducing valve, an emergency reversing valve, a reversing valve, a two-position four-way linkage valve, a retreating emergency reversing valve and an advancing emergency reversing valve, wherein the pilot valve is a two-position three-way solenoid valve; the emergency reversing valve is a three-position four-way manual reversing valve; the reversing valve is a three-position four-way solenoid valve; and each of the retreating emergency reversing valve and the advancing emergency reversing valve is a two-position three-way control valve. A pressure regulation valve, a cushion valve and an inching valve are eliminated, so that the cost and failure rate of the product are decreased; the proportional pressure reducing valve, the reversing valve and the two-position four-way linkage valve are rationally matched, so that the control system has high anti-jamming capability and high reliability; an adjustable throttling valve is additionally arranged, so that the whole hydraulic system has a high back pressure cushioning function to avoid gear shifting impact; and an emergency function is added, so that the safe and reliable control function of the whole forklift is realized by manually operating the emergency reversing valve under the condition of breakdown of the control system.