A package solution based on fourth-order pulse amplitude modulation (PAM4) optical transmitting components is proposed, whose data transmission rate can reach 200Gbit/s, to meet the design requirements of 200Gbit/s PAM4 optical transceiver modules. The package solution integrated four PAM4 electrical/optical conversion channels, and the data transmission rate of each single channel was 50Gbit/s. Based on the packaging solution of optical transmitting components, firstly, the components and technical difficulties of 200Gbit/s PAM4 optical transmitting components were introduced. Then, according to the technical difficulties, the 50Gbit/s data transmission channel was modeled, simulated and optimized. Finally, the test of the sample was completed. The test results show that for this solution, the data rate of a single PAM4 channel can reach 50Gbit/s, and the overall data rate of the PMA4 channels can reach 200Gbit/s, which can fully meet the design requirements of optical transceiver modules.