This paper proposes a package solution based on fourth-order Pulse Amplitude Modulation (PAM4) optical transmitting components, whose data transmission rate can reach 200Gbit/s, to meet the design requirements of 200Gbit/s PAM4 optical transceiver modules. The package solution integrates 4 PAM4 electrical/optical conversion channels, and the data transmission rate of each single channel is 50Gbit/s. Based on the packaging solution of optical transmitting components, this paper first introduces the components and technical difficulties of 200Gbit/s PAM4 optical transmitting components, and then according to the technical difficulties, the 50Gbit/s data transmission channel is modeled, simulated and optimized. Finally, the test of the sample is completed. The test result shows 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.